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                                                                    EXHIBIT 10.1

                               ALLIANCE AGREEMENT

            THIS ALLIANCE AGREEMENT (this "Alliance Agreement"), is entered into
this June 10, 2004, between JMAR Technologies, Inc., a Delaware corporation
("JMAR"), on the one hand, and Gregory M. Quist ("Quist") and David A. Drake
("Drake"), doing business as The LXT Group, on the other hand (Quist and Drake
are referred to herein collectively as "Sellers").

                                   WITNESSETH:

            WHEREAS, the parties entered into a letter agreement, dated April
16, 2004, which provides for the execution of an alliance agreement to fund the
development of the proof of concept model and beta models of the CORTS system
and, upon the satisfaction of certain conditions, the execution of a definitive
purchase agreement for the purchase and sale of the CORTS Business (the "Letter
Agreement"); and

            WHEREAS, the parties wish to set forth the terms of such an alliance
and certain terms of the purchase agreement;

            NOW, THEREFORE, in consideration of the representations, warranties,
covenants, agreements and undertakings hereinafter set forth in this Alliance
Agreement, the parties hereby agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

      1.1 "CORTS" shall mean a continuous online real-time surveillance system
that uses light scattering for detection of microorganism contamination of
water.

      1.2 "CORTS Technology" shall mean the technology related to the CORTS
system, including the technology described in the Provisional Patent Application
prepared by Quist and Drake and filed with the U.S. Patent & Trademark Office on
January 8, 2004, and all designs, specifications, build list, software,
algorithms and related technology.

      1.2 "CORTS Business" shall mean all of the tangible and intangible assets
or other rights owned by Quist and/or Drake related to the CORTS system and the
CORTS Technology.

      1.3 "Seed Stage" shall mean the activities performed during the period
from April 19, 2004 until January 5, 2005.

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                                   ARTICLE II
                          ALLIANCE TERMS AND CONDITIONS

      2.1 Funding of Seed Stage. Subject to JMAR's maximum financial commitment
set forth in Section 2.3 below and the satisfaction of the Milestones (as
defined in Section 2.3 below), during the Seed Stage JMAR agrees to provide
funding and other resources to complete the activities set forth on Schedule
2.3(a) hereto. These activities include the design, construction and testing of
a proof of concept model of the CORTS system, two alpha models and five beta
models.

      2.2 Improvement of LXT Facility. The Sellers are a party to a short-term
lease of the premises (the "LXT Facility") located at 1334 Industrial Avenue,
Escondido, California ("Lease"). A copy of the Lease has been reviewed and
approved by JMAR. Attached hereto as Schedule 2.2 is a list of the proposed
improvements to be made to the CORTS Facility, together with a list of
furniture, equipment and other fixed assets to be purchased for the LXT
Facility. JMAR agrees to pay the cost for said improvements and equipment as a
part of its financial commitment under Section 2.3(a) below.

      2.3 Maximum Funding Commitment.

      (a) JMAR's total financial commitment during the Seed Stage shall not
exceed $1,000,000, including cash outlay, cost of labor (including applicable
overhead and general and administrative burden), consulting fees paid to Quist
and Drake and to other consultants (including those directly engaged by JMAR
with Sellers' consent), the cost of facility improvements, equipment and
materials and the value of assets contributed directly by JMAR. JMAR agrees to
continue to provide the monetary and non-monetary contributions described above
during the Seed Stage for so long as (i) the milestones listed on Schedule
2.3(a) hereto ("Milestones") are met in accordance with the schedule set forth
thereon, and (ii) the costs to complete the Seed Stage have not exceeded, and
are not expected by JMAR to exceed, the total budgeted costs set forth on
Schedule 2.3(b) hereto (the "Budgeted Costs"). In the event that the Milestones
are not met in accordance with Schedule 2.3(a) or the total costs of the Seed
Stage are expected to exceed the Budgeted Costs, then JMAR shall have the right
to terminate this Alliance Agreement pursuant to Section 4.1 below. The total
financial commitment described above shall be exclusive of the Loan (defined in
Section 2.4 below).

      (b) JMAR agrees to make available to Sellers certain of its engineering
and other technical personnel and other staff to support completion of the Seed
Stage activities. The specific personnel and scheduling of such personnel shall
be determined by JMAR in its sole discretion. In the event that the personnel
required to complete the Seed Stage tasks are not available from JMAR, JMAR and
Sellers shall work together to identify and retain appropriate consultants or
other employees for the performance of the required tasks.

      2.4 Loan to Sellers. Upon the execution of this Alliance Agreement, JMAR
will loan a total of $125,000 to Sellers (the "Loan"). The Loan will be
evidenced by Promissory Notes executed by Drake and Quist each in the principal
amount of $62,500 (collectively, the "Notes"),

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in the form attached as Exhibit A hereto. The Loan will not bear interest unless
and until it is not paid when due and will be secured by the grant of a security
interest in the assets of the CORTS Business, which security interest is
perfected by filing a UCC-1 Financing Statement. Unless extended by JMAR, the
Loan will be due on the earlier of 90 days after (i) the termination of this
Alliance Agreement, (ii) the failure to complete the acquisition of the CORTS
Business by January 7, 2005 as contemplated by the Purchase Agreement or (iii)
the termination of the Purchase Agreement prior to the Closing Date following
the occurrence of the events listed in Section 4.1(a), (b) or (e) of this
Alliance Agreement. In the event that the Purchase Agreement is executed by the
parties and the CORTS Business is acquired pursuant thereto, the Loan shall be
canceled at the Closing and the outstanding principal amount shall be credited
to the purchase price at the Closing.

      2.5 Consulting Fees. JMAR agrees to engage Quist and Drake as independent
contractors during the Seed Stage. JMAR shall pay Quist and Drake a consulting
fee of $6,923.08 each every two weeks, and shall reimburse their actual
out-of-pocket expenses in accordance with standard JMAR business expense
reimbursement policies (the "Consulting Fees"). JMAR shall continue to pay the
Consulting Fees until the earlier of the termination of this Alliance Agreement
or the execution of the Purchase Agreement. The Purchase Agreement shall provide
for a continuation of the Consulting Fees and the consulting relationship on the
same terms until either the Closing of the acquisition of the CORTS Business or
the termination of the Purchase Agreement. The Purchase Agreement shall also
provide for execution of Employment Agreements with Quist and Drake on the
Closing Date of the acquisition of the CORTS Business, as described more fully
in Section 3.7(f) below.

      2.6 Representations and Warranties of Sellers. Each of the Sellers
represents and warrants to JMAR as follows:

      (a) Authority Relative to this Alliance Agreement. Each of the Sellers has
      the full power and authority to execute and deliver this Alliance
      Agreement, the Notes and other documents to be executed in connection
      herewith and to consummate the transactions contemplated hereby. This
      Alliance Agreement, the Notes and other documents to be executed in
      connection herewith have been duly and validly executed and delivered by
      Sellers and constitute the legal, valid and binding agreement and
      obligation of Sellers, enforceable against Sellers in accordance with
      their respective terms, except as enforceability may be limited by
      bankruptcy, insolvency, moratorium or other similar laws affecting
      creditors' rights generally or by general principles of equity, including
      principles governing the availability of equitable remedies.

      (b) Consents and Approvals; No Violation. Neither the execution and
      delivery of this Alliance Agreement and related agreements by Sellers nor
      the consummation of the transactions contemplated hereby will (i) require
      any consent, approval, authorization or permit from, or filing with or
      notification to, any governmental or regulatory authority or other third
      party, except for any such consents, approvals, authorizations, permits,
      filings or notifications, the absence of which would not have a material
      adverse effect on the assets, properties, business or financial condition
      of the CORTS Business; (ii) conflict with or result in a violation of any
      provision of (A) any statute, rule, regulation or ordinance which conflict

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      or violation might have a material adverse effect on the assets,
      properties, business or financial condition of the CORTS Business, or (B)
      any material order, injunction, judgment, award or decree applicable to
      Sellers or the CORTS Business; or (iii) result in or require the creation
      or imposition of any lien upon or with respect to any of the properties or
      assets of the Sellers related to the CORTS Business.

      (c) Patents, Trademarks, Trade Names, Etc. Schedule 2.6(c) hereto is a
      complete and correct list of (i) all patents, technology, know-how and
      processes, trademarks, service marks, trade names and copyrights
      (including all applications for the registration thereof) and all licenses
      and other agreements relating thereto, and (ii) all agreements relating to
      third party technology, know-how and processes (collectively the
      "Intellectual Property"), which are used or are proposed to be used in the
      CORTS Business and are owned or held by or registered in the name of
      Sellers or in which Sellers have any rights as licensor, licensee or
      otherwise. The Intellectual Property is owned by Sellers and Sellers do
      not have actual knowledge that any Intellectual Property is not valid or
      in full force and effect, nor have Sellers received any notice or claim
      that any of the Intellectual Property is invalid or unenforceable. The
      Intellectual Property which is owned by Sellers is owned free and clear of
      any license, sublicense, agreement, right, judgment, order, lien, adverse
      claim, charge or encumbrance of any nature whatsoever. The Sellers are in
      negotiations with NASA to enter into a license for the exclusive rights to
      use the technology embodied in U.S. Patent No. 6,313,908 issued to McGill,
      et al and assigned to NASA (the "NASA License") in the field of detection
      of microorganisms in water. Except for the NASA License, Sellers own, are
      licensed, have rights under or have the right to use all patents,
      trademarks, trade names, copyrights, licenses, technology, know-how,
      processes and other intellectual property used in or necessary to operate
      the CORTS Business as it is proposed to be operated. None of the
      Intellectual Property or any of the technology covered thereby or any of
      the know-how included therein has been misappropriated from any person,
      and Sellers are not infringing upon or otherwise acting illegally with
      regard to any such property owned by any other person, and there is no
      claim or action by any person pending, or to the knowledge of Sellers
      threatened, with respect thereto.

      (d) Litigation. Sellers have not been served with or otherwise received
      notice of any pending or threatened claim, legal action, suit,
      arbitration, governmental investigation or other legal or administrative
      proceeding relating to the CORTS Business or the CORTS Technology, the
      Letter Agreement, this Alliance Agreement or the transactions contemplated
      hereby, and Sellers do not know of any basis therefor. No unsatisfied
      order, decree or judgment is in effect with respect to the CORTS Business,
      the CORTS Technology, this Alliance Agreement or the transactions
      contemplated hereby. No citations, fines or penalties have been asserted
      against Sellers or the CORTS Business under any federal, state or local
      law relating to air or water pollution or other environmental protection
      matters, or relating to occupational health or safety.

      (e) Expertise and Prior Experience. Quist has investigated light
      scattering techniques as applied to particle detection since 1980. Quist
      holds a Ph.D. from UCSB in Physics, a BS degree from Yale and several
      patents covering particle detection systems. Quist has been developing
      microorganism detection systems for commercial application since

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      1995. Quist is currently a member of the board of directors of the Rincon
      Del Diablo Water District and serves as Rincon's representative to the San
      Diego County Water Authority (SDCWA). Quist, with two other authors, has
      recently completed a peer reviewed paper to be published later this year
      according to the American Water Works Association Research Foundation
      concerning light scattering for Cryptosporidium detection. Drake has been
      active in signal processing, radar and data acquisition systems since
      1974. Drake has a BSEE from Caltech and holds patents in cryptography and
      light scattering detection. Drake has served for nine years as the
      representative from the City of Escondido to the SDCWA. Drake has served
      in engineering management for 25 years. Quist and Drake have successfully
      fielded light scattering microorganism detection systems at a major water
      supplier and at the Super Bowl 2003 in San Diego.

      (f) CORTS Capabilities. Previous versions of the CORTS system have been
      characterized by raw false positive rates and the identification rate as
      measured against all events. To the best of Sellers' knowledge, the proof
      of concept instrument will have a raw false positive rate for 1, 2 and 4
      micron PSL spheres at or below 1 part in a thousand in purified water. To
      the best of Sellers' knowledge, the identification rate of such spheres
      will be at or greater than 95% as measured against all events.

      2.7 Representations and Warranties of JMAR. JMAR represents and warrants
to the Sellers as follows:

      (a) Organization. JMAR is a corporation duly incorporated, validly
      existing and in good standing under the laws of the State of Delaware and
      has all requisite corporate power and authority to own, lease and operate
      its properties and assets and to carry on its business as now being
      conducted.

      (b) Authorization of Agreement. JMAR has the requisite corporate power and
      authority to enter into and deliver this Alliance Agreement and to carry
      out its obligations hereunder. The execution and delivery by JMAR of this
      Alliance Agreement, the performance by JMAR of its obligations hereunder
      and the consummation by JMAR of the transactions contemplated hereby have
      been duly authorized by all necessary corporate action on its part. This
      Alliance Agreement has been duly and validly executed and delivered by
      JMAR and is the legal, valid and binding agreement and obligation of JMAR,
      enforceable against it in accordance with its terms, except as
      enforceability may be limited by bankruptcy, insolvency, moratorium or
      other similar laws affecting creditors' rights generally or by general
      principles of equity, including principles governing the availability of
      equitable remedies.

      (c) Consents and Approvals; No Violations. Neither the execution and
      delivery of this Agreement by JMAR nor the consummation of the
      transactions contemplated hereby or compliance with any of the provisions
      hereof will (i) conflict with or result in any breach of any provision of
      the Certificate of Incorporation or Bylaws of JMAR, each as amended to
      date; (ii) require any consent, approval, authorization or permit from, or
      filing with or notification to, any governmental or regulatory authority
      or other third party, except for any such consents, approvals,
      authorizations, permits, filings or notifications, the absence of

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      which would not have a material adverse effect on the assets, properties,
      business or condition of JMAR; or (iii) conflict with or result in a
      violation of any provision of (A) any statute, rule, regulation or
      ordinance which conflict or violation might have a material adverse effect
      on the assets, properties, business or condition of JMAR or (B) any
      material order, writ, injunction, judgment, award, decree, permit,
      concession, grant, franchise or license applicable to JMAR or any of its
      respective properties or assets.

      2.8 No Shop Provision. Until either the termination of this Alliance
Agreement or the execution of the Purchase Agreement, Sellers agree that neither
Sellers nor any of their respective agents, representatives or affiliates will,
directly or indirectly, solicit, encourage, negotiate or enter into any
transaction with any other person with respect to the sale or license of, or
other transfer of rights to, the CORTS Business or the CORTS Technology, nor
will Sellers participate in any negotiations regarding or furnish to any other
person any information with respect to, or otherwise cooperate in any way with,
or assist or participate in, facilitate or encourage, any effort or attempt by
any other person to do or seek to do any of the foregoing. In the event of a
material violation of any of the provisions of this Section 2.8 by one or both
of the Sellers prior to the termination of this Alliance Agreement resulting in
a material alteration of the terms of the Purchase Agreement, or in the failure
to execute the Purchase Agreement or in the failure to consummate the
transactions contemplated by the Purchase Agreement, Sellers will reimburse JMAR
for all of its actual costs incurred after the execution of the Letter Agreement
and before the termination of this Alliance Agreement.

      2.9 Indemnification by JMAR. JMAR agrees to indemnify, defend and hold
harmless Sellers and their respective successors or assigns from and against any
and all losses, liabilities, damages, deficiencies, costs or expenses, including
interest, penalties and reasonable attorneys' fees and disbursements ("Losses")
which either of them shall incur or suffer based upon, arising out of or
otherwise in respect to any third party claims made or threatened against
Sellers which arise out of or involve the operation of the CORTS Business after
the execution of the Letter Agreement and until the termination of this Alliance
Agreement; provided, however, JMAR shall not be obligated to indemnify Sellers
for Losses which are finally judicially determined to have resulted from the
gross negligence or willful misconduct of Sellers, including Losses arising from
the misappropriation of the trade secrets of another person. JMAR shall have no
obligation to indemnify Sellers against Losses arising from their pursuit of the
CORTS Business or their use of the CORTS Technology after termination of this
Alliance Agreement.

                                   ARTICLE III
                         EXECUTION OF PURCHASE AGREEMENT

      3.1 Execution of the Purchase Agreement. The parties agree to use their
best efforts to execute a definitive Purchase Agreement for the purchase and
sale of all of the assets of the CORTS Business by no later than August 1, 2004
(the "Purchase Agreement"). Subject to the satisfaction of the conditions set
forth in Sections 3.7 and 3.8 below, the Purchase Agreement will provide that on
the Closing Date (as defined in Section 3.4 below) the Sellers will sell and
deliver to JMAR, and JMAR will purchase and acquire from Sellers, all right,
title and interest of

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Sellers in and to all of their respective rights, assets, and properties of
every kind relating to or primarily involving the CORTS Business, other than
cash on hand (the "Purchased Assets").

      3.2 Purchased Assets. The Purchased Assets shall include, without
limitation, the following assets related to the CORTS Business and CORTS
Technology:

      (a) all machinery, equipment, furniture and similar property;

      (b) all inventories of raw materials, work in process, finished products,
      goods, products, including the Proof of Concept, Alpha models and Beta
      Models, spare parts, replacement and component parts, and office and other
      supplies (collectively, the "Inventories");

      (c) all rights to unfilled customer orders;

      (d) all of the rights of Sellers under all contracts, arrangements,
      confidentiality agreements, patent assignments, license and technology
      agreements, leases and agreements;

      (e) all accounts receivable and other receivables;

      (f) (i) all patents throughout the world and applications therefor
      including all applications for patents filed between the date hereof and
      the Closing Date, (ii) all trademarks, service marks and trade names
      throughout the world, including registrations and applications for
      registration thereof, if any, and (iii) all copyright registrations
      throughout the world and applications therefor, and any other
      non-registered copyrights;

      (g) all designs, software, algorithms, drawing packages, plans, trade
      secrets, inventions, processes, procedures, research records,
      manufacturing know-how and manufacturing formulae;

      (h) all books, records, manuals and other materials, including, without
      limitation, all lists of customers, distribution lists, production data,
      sales and promotional materials and records, research and development
      files, data and laboratory books, patent disclosures and accounting
      records; and

      (i) to the extent their transfer is permitted by law, all governmental and
      other licenses, permits and approvals and license applications relating
      specifically to the Purchased Assets.

At the Closing, Sellers will transfer, convey, assign and deliver all of the
Purchased Assets to JMAR free and clear of all liabilities, obligations,
security interests, liens, charges, encumbrances and claims.

      3.3 Assumption of Liabilities. The Purchase Agreement will provide that at
the Closing JMAR will assume the liabilities, obligations and commitments
arising out of or

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requiring performance under agreements, contracts or commitments entered into
after April 16, 2004 that are included in the Purchased Assets (the "Assumed
Contracts"). Except for the Assumed Contracts, JMAR shall not assume any
liabilities, obligations or commitments of Sellers relating to or arising out of
the business, products, services, operations, assets, properties, taxes or
deferred taxes of the CORTS Business on or prior to the Closing, or based on any
omission or state of facts or events existing or occurring on or prior to the
Closing.

      3.4 Closing Date. The Purchase Agreement will provide for the completion
of the purchase and sale of the CORTS Business by no later than January 7, 2005
(the "Closing Date").

      3.5 Purchase Price. The Purchase Agreement will provide that, subject to
the terms and conditions set forth in the Purchase Agreement, in consideration
for the sale, transfer and delivery by Sellers of all of the Purchased Assets to
JMAR, at the Closing JMAR will pay or cause to be paid to Sellers the total
Purchase Price as follows:

      (a)   On the Closing Date, JMAR will pay the Sellers a total of $250,000
            in cash, divided equally between Quist and Drake. One-half of the
            payment shall be made in the form of cancellation of the Loan;

      (b)   On the Closing Date, JMAR will issue and deliver 90,000 shares of
            JMAR common stock to Quist and 90,000 shares to Drake. If Quist's
            employment with JMAR terminates for any reason other than (i)
            termination upon the death or disability of Quist as provided in
            Exhibit B, (ii) termination by JMAR for Cause (as defined in Exhibit
            B), (iii) termination by JMAR because the CORTS Business has been
            discontinued in substantial part or (iv) termination by Quist
            without Good Reason (as defined in Exhibit B), then all of Quist's
            unvested shares shall immediately vest. Otherwise, if Quist is
            employed by JMAR at the end of the first year after the Closing
            Date, one-third of his shares shall thereupon vest, with an
            additional one-third vesting if he is so employed at the end of the
            second year after the Closing Date and the remaining one-third shall
            vest if he is employed at the end of the third year after the
            Closing Date. If Drake's employment with JMAR terminates for any
            reason other than (i) termination upon the death or disability of
            Drake as provided in Exhibit B, (ii) termination by JMAR for Cause
            (as defined in Exhibit B), (iii) termination by JMAR because the
            CORTS Business has been discontinued in substantial part or (iv)
            termination by Drake without Good Reason (as defined in Exhibit B),
            then all of Drake's unvested shares shall immediately vest.
            Otherwise, if Drake is employed by JMAR at the end of the first year
            after the Closing Date, one-third of his shares shall thereupon
            vest, with an additional one-third vesting if he is so employed at
            the end of the second year after the Closing Date and the remaining
            one-third shall vest if he so employed at the end of the third year
            after the Closing Date. Except as set forth above in this paragraph,
            upon the termination of employment of Quist or Drake, as the case
            may be, the unvested shares, if any, held by such person shall be
            forfeited; and

      (c)   On the Closing Date, JMAR will grant to each of Quist and Drake
            one-half of the

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            right to receive an annual payment (the "Future Payment Right")
            calculated as follows:

            (i)   2% of the revenue of the CORTS Business for 2004 and for each
                  of the five full fiscal years after the Closing Date;

            (ii)  1% of the revenue of the CORTS Business for each of the next
                  two fiscal years;

            (iii) 25% of the "Residual Income" generated by the CORTS Business
                  for 2004 and for each of the five full fiscal years after the
                  Closing Date; and

            (iv)  4% of Residual Income for the next five full fiscal years.

      (d)   The "Residual Income" of the CORTS Business for a given fiscal year
            shall be defined as the Net Income of the CORTS Business for that
            fiscal year (computed in accordance with generally accepted
            accounting principles ("GAAP")), less interest imputed on the
            average amount of the Total Investment (as defined in Section 3.5(e)
            below) as of the last day of each fiscal quarter during that fiscal
            year. The imputed interest for a given fiscal quarter shall be equal
            to (i) the average of the "prime rate" for that fiscal quarter, plus
            (ii) six percent (referred to herein as the "Applicable Rate").

      (e)   The Future Payment Right shall be calculated within 60 days after
            the end of each fiscal year, shall accrue and shall be deemed to
            have been earned by Quist and Drake, but no payment of the Future
            Payment Right will be made to Quist or Drake unless and until the
            Cumulative Cash (as defined below) is sufficient to repay JMAR's
            Total Investment in the CORTS Business, plus interest accrued at the
            Applicable Rate. If the Cumulative Cash is sufficient to repay
            JMAR's Total Investment in the CORTS Business, plus interest accrued
            at the Applicable Rate, then Quist and Drake shall be paid in the
            aggregate the lesser of (i) one-half of the Cumulative Cash after
            deduction of the Total Investment and said accrued interest for the
            applicable fiscal year or (ii) the total unpaid accrued Future
            Payment Right. "Total Investment" shall mean all amounts contributed
            by JMAR under Section 2.3(a) prior to the Closing Date, plus all
            cash, direct costs paid by JMAR on behalf of the CORTS Business and
            all other assets contributed by JMAR to the CORTS Business after the
            Closing Date. "Cumulative Cash" shall mean cash or cash equivalents
            at the end of the subject period minus any outstanding working
            capital line of credit attributable directly to the CORTS Business.

      (f)   The maximum total payment to Sellers as a group under the Future
            Payment Right shall be $20,000,000 ("Maximum Future Payment").

      (g)   Schedule 3.5 hereto sets forth an illustration of the calculations
            to be made pursuant to this Section 3.5.

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      3.6 Representations and Warranties. The Purchase Agreement will contain
the representations and warranties listed on Schedule 3.6 hereto, plus such
other representations and warranties as are customary for transactions of this
nature or as may become necessary as a result of the parties' experiences during
the Seed Stage. The representations will expire two years after the Closing Date
and the Sellers' indemnification obligations under the representations shall be
limited to an offset against any Future Payment Right earned by Sellers.

      3.7 Conditions to the Obligations of JMAR. The Purchase Agreement will
provide that the obligations of JMAR to complete the acquisition of the
Purchased Assets will be subject to the satisfaction of each of the following
conditions prior to the Closing Date unless waived by JMAR:

      (a) All representations and warranties of Sellers contained in the
      Alliance Agreement and in the Purchase Agreement shall be true and correct
      when made and as of the Closing Date.

      (b) All covenants, agreements and obligations required by the terms of the
      Purchase Agreement to be performed by Sellers at or before the Closing
      Date shall have been duly and properly performed.

      (c) JMAR shall be satisfied with all intellectual property matters,
      including having reviewed the pending PointSource patent application and
      having determined that any modifications to the design of the Proof of
      Concept, alpha or beta products that are required in order to avoid
      infringement of the PointSource patents can be made without significant
      adverse impact on the operation or economics of those units. The
      satisfaction of this condition shall not operate as a waiver of the
      representations of Sellers in Section 2.6(c) above or the representations
      concerning Intellectual Property contained in the Purchase Agreement.

      (d) JMAR's Board of Directors shall have approved the execution by JMAR of
      the Purchase Agreement and the performance by JMAR of the transactions
      contemplated therein.

      (e) JMAR shall have entered into Employment Agreements with Quist and
      Drake in the form of Exhibit B hereto.

      (f) All of the Milestones that are required to have been satisfied as of
      the Closing Date shall have been satisfied.

      (h) JMAR shall have received from Sellers: 1) a bill of sale and
      assignment; 2) assignments of the contracts, agreements, licenses,
      instruments (including purchase and sales orders), leases, joint venture
      agreements, claims, rights, copyrights, patents, trade secrets and other
      intangible properties included in the Purchased Assets; and 3) such other
      instruments of conveyance, assignment and transfer, reasonably
      satisfactory in form and substance to JMAR.

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      3.8 Conditions to the Obligations of Sellers. The Purchase Agreement will
provide that the obligations of Sellers to complete the acquisition of the
Purchased Assets will be subject to the satisfaction of each of the following
conditions prior to the Closing Date unless waived by Sellers:

      (a) All representations and warranties of JMAR contained in the Alliance
      Agreement and in the Purchase Agreement shall be true and correct when
      made and as of the Closing Date.

      (b) All covenants, agreements and obligations required by the terms of the
      Purchase Agreement to be performed by JMAR at or before the Closing shall
      have been duly and properly performed.

      (c) Sellers shall have received an opinion letter of Joseph G. Martinez,
      General Counsel of JMAR, dated as of the Closing Date, in form and
      substance agreed to by the parties.

      (d) JMAR shall have entered into Employment Agreements with Quist and
      Drake in the form of Exhibit B hereto.

      3.9 Other Provisions of Purchase Agreement.

      (a) As additional consideration for the purchase of the Purchased Assets,
      the Purchase Agreement will contain non-competition provisions in the form
      set forth on Schedule 3.9 hereto restricting the activities of Quist and
      Drake for a term of five years after the Closing Date.

      (b) The Purchase Agreement will provide that in the event JMAR sells the
      CORTS Business, then JMAR will pay Sellers the lesser of (i) 50% of the
      gain (calculated in accordance with GAAP) over JMAR's Total Investment in
      the CORTS Business or (ii) the remaining unpaid amount of the Maximum
      Future Payment (defined in Section 3.5(f) above). The Purchase Agreement
      will provide that if after the Closing Date JMAR decides to discontinue
      its support or otherwise dispose of the CORTS Business, then it will first
      offer to sell the assets of the CORTS Business (including Intellectual
      Property) to Quist and Drake on terms that will include the repayment to
      JMAR of its Total Investment in the CORTS Business, plus interest accrued
      at the Applicable Rate (as defined in Section 3.5(d)), either in the form
      of a purchase price payment, the payment of a royalty of 5% of future
      revenues from the sale of systems using the CORTS Technology, or some
      combination of purchase price and royalty. The Purchase Agreement will
      provide that in the event of a sale, merger or other transfer of the stock
      or assets of JMAR, the acquiring party (or surviving party in a merger)
      shall be required to assume JMAR's obligations under this Alliance
      Agreement and the Purchase Agreement.

      (c) The Purchase Agreement will confirm that as officers and/or employees
      of

                                       11
<PAGE>

      JMAR, Quist and Drake will be entitled to the same indemnification
      protections that are generally available to JMAR employees and officers,
      as well as the benefits of JMAR's directors and officers liability
      insurance coverage as in effect from time to time. The Purchase Agreement
      will also provide that JMAR will indemnify, defend and hold harmless
      Sellers and their respective successors or assigns from and against any
      and all losses, liabilities, damages, deficiencies, costs or expenses,
      including interest, penalties and reasonable attorneys' fees and
      disbursements ("Losses") which either of them shall incur or suffer based
      upon, arising out of or otherwise in respect to any third party claims
      made or threatened against Sellers which arise out of or involve the
      operation of the CORTS Business after the execution of the Letter
      Agreement; provided, however, JMAR shall not be obligated to indemnify
      Sellers for Losses which are finally judicially determined to have
      resulted from the gross negligence or willful misconduct of Sellers,
      including Losses arising from the misappropriation of the trade secrets of
      another person. JMAR shall have no obligation to indemnify Sellers against
      Losses arising from their pursuit of the CORTS Business or their use of
      the CORTS Technology after termination of this Alliance Agreement.

                                   ARTICLE IV
                        TERMINATION OF ALLIANCE AGREEMENT

      4.1 Termination. The Alliance Agreement may be terminated at any time
prior to the Closing by:

      (a) The mutual consent of Sellers, on the one hand, and JMAR, on the other
      hand; or

      (b) JMAR, if the Milestones have not been achieved in accordance with
      Schedule 2.3(a) hereto, or if the costs have exceeded, or if the costs are
      projected by Sellers and JMAR to exceed, the Budgeted Costs (as defined in
      Section 2.3); or

      (c) JMAR or the Sellers, if the Purchase Agreement has not been executed
      by the Sellers by August 1, 2004; or

      (d) JMAR or the Sellers, if the Closing has not occurred by January 7,
      2005 through no fault of the terminating party; or

      (e) JMAR, if Sellers shall have materially breached or failed in any
      material respect to comply with any of their obligations under this
      Alliance Agreement, or any representation or warranty of Sellers contained
      in this Alliance Agreement shall have been inaccurate when made in any
      material respect; or

      (f) Sellers, if JMAR shall have materially breached or failed in any
      material respect to comply with any of its obligations under this Alliance
      Agreement, or any representation or warranty of JMAR contained in this
      Alliance Agreement shall have been inaccurate when made in any material
      respect.

                                       12
<PAGE>

      4.2 Transfer of Rights to Sellers; License to JMAR. In the event that JMAR
terminates this Alliance Agreement pursuant to Section 4.1(a), (b), (c) or (d)
above, or in the event that Sellers terminate this Alliance Agreement pursuant
to Section 4.1(f) above, then JMAR shall assign and transfer all property and
rights acquired or created during the Seed Stage to Sellers and shall confirm
Seller's ownership of all of the intellectual property and other rights to the
CORTS Technology. In consideration for said transfer and confirmation of rights,
Sellers will grant JMAR a royalty of 5% of future revenues from the sale of
systems using the CORTS Technology until JMAR's Total Investment (as defined in
Section 3.5(e) above) in the Seed Stage is repaid. In the event that JMAR
terminates this Alliance Agreement pursuant to Section 4.1(e) above, then JMAR
shall retain all property and rights that it provided or otherwise contributed
to the CORTS Business during the Seed Stage.

                                    ARTICLE V
                            MISCELLANEOUS PROVISIONS

      5.1 Expenses. Except as otherwise provided in this Alliance Agreement,
Sellers and JMAR shall pay their respective expenses separately incurred in
connection with this Alliance Agreement and the Purchase Agreement and the
transactions contemplated hereby and thereby.

      5.2 Entire Agreement. This Alliance Agreement and the additional written
agreements called for herein together contain the entire agreement between
Sellers and JMAR with respect to the purchase and sale of the business and
assets of the CORTS Business and the related transactions and supersede all
prior arrangements or understandings with respect thereto, including the Letter
Agreement, dated April 16, 2004, between JMAR and the Sellers. There have been
no oral representations or warranties and neither party has relied on any
representation not contained herein.

      5.3 Assignment. This Alliance Agreement and each other agreement entered
into pursuant hereto and all of the provisions hereof and thereof shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and permitted assigns, but neither this Alliance Agreement nor any of
the rights, interests or obligations hereunder and thereunder, shall be assigned
by either party hereto or thereto without the prior written consent of the other
party. Sellers hereby agree that notwithstanding the foregoing or the fact that
this Alliance Agreement shall have been executed by JMAR directly, JMAR may, at
its option, cause the transactions contemplated hereby to be consummated by (i)
a newly-formed subsidiary or subsidiaries of JMAR to be organized for the
purpose of consummating this transaction or (ii) any other affiliated
corporation of JMAR; provided, however, that JMAR's obligations shall be
retained or guaranteed by JMAR. This Alliance Agreement is not intended to
confer upon any other party, except the parties hereto, any rights or remedies
hereunder.

      5.4 Counterparts. This Alliance Agreement may be executed in any number of
counterparts, each of which independently shall have the same effect as if it
were the original and all of which taken together shall constitute one and the
same document. Executed signature pages which are transmitted by facsimile to
the other party shall be deemed to have been delivered on the date so
transmitted provided that an originally executed signature is delivered to

                                       13
<PAGE>

the other party within 3 business days thereafter.

      5.5 Notices. All notices, consents, requests, instructions, approvals and
other communications provided for herein shall be validly given, made or served,
if in writing and delivered personally, sent by registered or certified mail,
postage prepaid, sent by established overnight delivery service, or transmitted
by fax (except for legal process) to:

            If to JMAR:

            JMAR Technologies, Inc.
            5800 Armada Drive
            Carlsbad, California 92008
            Attention:  General Counsel
            Fax: 760-602-3299

            If to Sellers:

            Gregory M. Quist
            2166 Weiss Way
            Escondido, California  92029
            Fax: 760-

            David A. Drake
            325 Rock Ridge Place
            Escondido, California 92027
            Fax: 760-

            With a copy to:

            Richard L. Seidenwurm, Esq.
            Solomon Ward Seidenwurm & Smith, LLP
            401 B Street, Suite 1200
            San Diego, CA  92101
            Fax: 619-231-4755

or to such other address or fax number as any party hereto may, from time to
time, designate in a written notice given in a like manner. Notice given by mail
as set out above shall be deemed delivered three days after the date it is
postmarked. Notice given by overnight delivery service shall be deemed delivered
when received. Notice given by fax shall be deemed given when transmitted,
provided that the sender retains a written confirmation of such transmission and
mails an original thereof to the other party within one business day after said
transmission.

      5.6 Arbitration. Any dispute, claim or controversy arising out of or
relating to this Alliance Agreement or breach, termination, enforcement,
interpretation or validity thereof, including the determination of the scope or
applicability of this Agreement to arbitrate, shall be

                                       14
<PAGE>

determined by arbitration in San Diego County, California, before a sole
arbitrator, in accordance with the laws of the State of California for
agreements made in and to be performed in that State. The arbitration shall be
administered by JAMS pursuant to its Streamlined Arbitration Rules and
Procedures. Judgment on the Award may be entered in any court having
jurisdiction.

      5.7 Interpretation. The parties acknowledge that this Alliance Agreement
has been negotiated by both parties and that neither this Alliance Agreement nor
any of its provisions should be interpreted for or against any party on the
basis said party or its attorney drafted the Alliance Agreement or the provision
in question.

      5.8 Severability. If any provision of this Alliance Agreement is declared
by a court of competent jurisdiction or arbitrator to be invalid, void or
unenforceable, the remaining provisions of this Alliance Agreement nevertheless
will continue in full force and effect without being impaired or invalidated in
any way.

      5.9 Governing Law. This Alliance Agreement shall be governed by and
construed in accordance with the laws of the State of California.

      5.10 Attorneys' Fees. In the event suit is commenced to enforce or contest
this Alliance Agreement, or any portion thereof, the prevailing party in such
suit shall be entitled to recover from the non-prevailing party all fees, costs
and expenses of enforcing any right of such prevailing party under and with
respect to this Alliance Agreement, including without limitation, such
reasonable fees and expenses of attorneys and accountants, which shall include,
without limitation, all fees, costs and expenses of appeals.

      5.11 Force Majeure. Whenever a period of time is prescribed for action by
a party hereunder, such party shall not be responsible for, and there will be
excluded from the computation for such period of time, any delays due to an
event of force majeure, including but not limited to strikes, riots, acts of
God, war, governmental laws, regulations or restrictions of general application
to the public at large, or any other causes beyond the control of such party.

      IN WITNESS WHEREOF, the parties hereto have caused this Alliance Agreement
to be duly executed as of the date first above written.

JMAR TECHNOLOGIES, INC.

By: /s/  Ronald A. Walrod
    -----------------------------------------------
Ronald A. Walrod, President and
Chief Executive Officer

         /s/  Gregory M. Quist
---------------------------------------------------
Gregory M. Quist, doing business as The LXT Group

         /s/  David A. Drake
---------------------------------------------------
David A. Drake, doing business as The LXT Group

                                       15
<PAGE>

                                List of Schedules

Schedule 2.2 - List of Improvements to LXT Facility

Schedule 2.3(a) - Seed Stage Activities and Seed Stage Milestones

Schedule 2.3(b) - Budgeted Costs

Schedule 2.6(c) - List of Intellectual Property

Schedule 3.5 - Calculation of Residual Income (Illustration)

Schedule 3.6 - Representations and Warranties for Purchase Agreement

Schedule 3.9 - Non-Competition Provisions

Exhibits:

Exhibit A - Form of Promissory Note and Security Agreement

Exhibit B - Form of Employment Agreement

                                       16<PAGE>

                                                                    EXHIBIT 10.2

                             SECURED PROMISSORY NOTE

$62,500.00                                                         June 10, 2004
                                                            Carlsbad, California

      FOR VALUE RECEIVED, the undersigned, Gregory M. Quist ("Maker"), hereby
promises to pay to JMAR Technologies, Inc., a Delaware corporation ("Payee"), or
order, the principal sum of Sixty-Two Thousand Five Hundred and 00/100 Dollars
($62,500.00). The principal balance shall not accrue interest unless and until
all amounts due hereunder are not paid in full on the date when due, and
thereafter the unpaid amounts due hereunder shall accrue interest at the rate of
ten percent (10%) per annum, or the maximum rate permitted by law if lesser,
computed on the basis of a 365 day year.

      The entire principal of this Note shall be due and payable on the earlier
of 90 days after: (i) the termination of that certain Alliance Agreement, dated
June 10, 2004, among Payee, Maker and David A. Drake ("Alliance Agreement"),
(ii) the failure to complete the acquisition of the CORTS Business (as defined
in the Alliance Agreement) by January 7, 2005 or any extended Closing Date
agreed to by Payee or (iii) the termination of the Purchase Agreement to be
entered into among Maker, Payee and David A. Drake prior to the Closing Date (as
defined therein) following the occurrence of the events listed in Section
4.1(a), (b) or (e) of the Alliance Agreement. In the event that the CORTS
Business is acquired by Payee, as contemplated by the Alliance Agreement, at the
Closing all amounts owing under this Note shall be satisfied through the
application by Payee of said amounts to the purchase price of the CORTS
Business.

      The payment of this Note and the fulfillment of all other obligations of
Maker hereunder are secured by and entitled to all of the benefits of that
certain Security Agreement, dated June 10, 2004, executed by Maker and granting
to Payee a security interest in certain assets of Maker.

      Principal hereunder shall be payable in lawful money of the United States
of America and shall be payable to Payee or any successor holder of this Note at
5800 Armada Drive, Carlsbad, CA 92008, or at such other address as may be
specified in a written notice to Maker given by Payee or any successor holder of
this Note.

      In the event suit is commenced to obtain the payment of any amount payable
hereunder, or to enforce any right of Payee or any successor holder hereunder or
to enforce any obligation of Maker hereunder, the prevailing party to such suit
shall be entitled to reasonable attorneys' fees from the nonprevailing party, as
fixed by the Court.

      Maker shall have the right to prepay all or any part of the principal sum
of this Note, without penalty of any kind whatsoever, at any time or from time
to time.

      IN WITNESS WHEREOF, Maker has caused this Note to be executed by its
officer thereunto duly authorized at Carlsbad, California as of the date first
hereinabove written.

                                                         /s/ Gregory M. Quist
                                                         ----------------------
                                                             Gregory M. Quist

<PAGE>

                             SECURED PROMISSORY NOTE

$62,500.00                                                         June 10, 2004
                                                            Carlsbad, California

      FOR VALUE RECEIVED, the undersigned, David A. Drake ("Maker"), hereby
promises to pay to JMAR Technologies, Inc., a Delaware corporation ("Payee"), or
order, the principal sum of Sixty-Two Thousand Five Hundred and 00/100 Dollars
($62,500.00). The principal balance shall not accrue interest unless and until
all amounts due hereunder are not paid in full on the date when due, and
thereafter the unpaid amounts due hereunder shall accrue interest at the rate of
ten percent (10%) per annum, or the maximum rate permitted by law if lesser,
computed on the basis of a 365 day year.

      The entire principal of this Note shall be due and payable on the earlier
of 90 days after: (i) the termination of that certain Alliance Agreement, dated
June 10, 2004, among Payee, Maker and Gregory Quist ("Alliance Agreement"), (ii)
the failure to complete the acquisition of the CORTS Business (as defined in the
Alliance Agreement) by January 7, 2005 or any extended Closing Date agreed to by
Payee or (iii) the termination of the Purchase Agreement to be entered into
among Maker, Payee and Gregory M. Quist prior to the Closing Date (as defined
therein) following the occurrence of the events listed in Section 4.1(a), (b) or
(e) of the Alliance Agreement. In the event that the CORTS Business is acquired
by Payee, as contemplated by the Alliance Agreement, at the Closing all amounts
owing under this Note shall be satisfied through the application by Payee of
said amounts to the purchase price of the CORTS Business.

      The payment of this Note and the fulfillment of all other obligations of
Maker hereunder are secured by and entitled to all of the benefits of that
certain Security Agreement, dated June 10, 2004, executed by Maker and granting
to Payee a security interest in certain assets of Maker.

      Principal hereunder shall be payable in lawful money of the United States
of America and shall be payable to Payee or any successor holder of this Note at
5800 Armada Drive, Carlsbad, CA 92008, or at such other address as may be
specified in a written notice to Maker given by Payee or any successor holder of
this Note.

      In the event suit is commenced to obtain the payment of any amount payable
hereunder, or to enforce any right of Payee or any successor holder hereunder or
to enforce any obligation of Maker hereunder, the prevailing party to such suit
shall be entitled to reasonable attorneys' fees from the nonprevailing party, as
fixed by the Court.

      Maker shall have the right to prepay all or any part of the principal sum
of this Note, without penalty of any kind whatsoever, at any time or from time
to time.

      IN WITNESS WHEREOF, Maker has caused this Note to be executed by its
officer thereunto duly authorized at Carlsbad, California as of the date first
hereinabove written.

                                                          /s/ David A. Drake
                                                          ---------------------
                                                              David A. Drake

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