Document:

EXHIBIT
      10.44

    

    LOCK-UP
      AGREEMENT

    

    May
      __,
      2008

    

    Each
      Purchaser referenced below:

    

    
      	 	
              Re:

            	
              Securities
                Purchase Agreement, dated as of May __, 2008 (the “Purchase
                Agreement”),
                between QPC Lasers, Inc., a Nevada corporation (the “Company”)
                and the purchasers signatory thereto (each, a “Purchaser”
                and, collectively, the “Purchasers”)

            

    

    

    Ladies
      and Gentlemen:

    

    Defined
      terms not otherwise defined in this letter agreement (the “Letter
      Agreement”)
      shall
      have the meanings set forth in the Purchase Agreement. Pursuant to Section
      2.2(a) of the Purchase Agreement and in satisfaction of a condition of the
      Company’s obligations under the Purchase Agreement, the undersigned irrevocably
      agrees with the Company that, from the date hereof until the 12 month
      anniversary of the date of the Purchase Agreement (such period, the
“Restriction
      Period”),
      the
      undersigned will not offer, sell, contract to sell, hypothecate, pledge or
      otherwise dispose of (or enter into any transaction which is designed to, or
      might reasonably be expected to, result in the disposition (whether by actual
      disposition or effective economic disposition due to cash settlement or
      otherwise) by the undersigned or any Affiliate of the undersigned or any person
      in privity with the undersigned or any Affiliate of the undersigned), directly
      or indirectly, including the filing (or participation in the filing) of a
      registration statement with the Commission (other than a registration statement
      on Form S-8) in respect of, or establish or increase a put equivalent position
      or liquidate or decrease a call equivalent position within the meaning of
      Section 16 of the Exchange Act with respect to, any shares of Common Stock
      or
      Common Stock Equivalents beneficially owned, held or hereafter acquired by
      the
      undersigned (the “Securities”).
      Beneficial
      ownership shall be calculated in accordance with Section 13(d) of the Exchange
      Act. In order to enforce this covenant, at such time as the Company appoints
      a
      transfer agent for the securities of the Company, the Company shall notify
      such
      transfer agent to immediately impose irrevocable stop-transfer instructions
      preventing such transfer agent from effecting any actions in violation of this
      Letter Agreement.

    

    The
      undersigned acknowledges that the execution, delivery and performance of this
      Letter Agreement is a material inducement to each Purchaser to complete the
      transactions contemplated by the Purchase Agreement and that each Purchaser
      (which shall be a third party beneficiary of this Letter Agreement) and the
      Company shall be entitled to specific performance of the undersigned’s
      obligations hereunder. The undersigned hereby represents that the undersigned
      has the power and authority to execute, deliver and perform this Letter
      Agreement, that the undersigned has received adequate consideration therefor
      and
      that the undersigned will indirectly benefit from the closing of the
      transactions contemplated by the Purchase Agreement. 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
 

    This
      Letter Agreement may not be amended or otherwise modified in any respect without
      the written consent of each of the Company, Purchasers holding 67% of the
      outstanding Debentures and the undersigned. This Letter Agreement shall be
      construed and enforced in accordance with the laws of the State of New York
      without regard to the principles of conflict of laws. The undersigned
hereby
      irrevocably submits to the exclusive jurisdiction of the United States District
      Court sitting in the Southern District of New York and the courts of the State
      of New York located in Manhattan, for the purposes of any suit, action or
      proceeding arising out of or relating to this Letter Agreement, and hereby
      waives, and agrees not to assert in any such suit, action or proceeding, any
      claim that (i) it is not personally subject to the jurisdiction of such court,
      (ii) the suit, action or proceeding is brought in an inconvenient forum, or
      (iii) the venue of the suit, action or proceeding is improper.
      The
      undersigned hereby irrevocably waives personal service of process and consents
      to process being served in any such suit, action or proceeding by receiving
      a
      copy thereof sent to the Company at the address in effect for notices to it
      under the Purchase Agreement and agrees that such service shall constitute
      good
      and sufficient service of process and notice thereof. The undersigned hereby
      waives any right to a trial by jury. Nothing contained herein shall be deemed
      to
      limit in any way any right to serve process in any manner permitted by law.
      The
      undersigned agrees and understands that this Letter Agreement does not intend
      to
      create any relationship between the undersigned and each Purchaser and that
      each
      Purchaser is not entitled to cast any votes on the matters herein contemplated
      and that no issuance or sale of the Securities is created or intended by virtue
      of this Letter Agreement.

    

    By
      its
      signature below, the Company hereby acknowledges and agrees that, reflecting
      this Letter Agreement, upon the appointment of a transfer agent for the Company,
      it shall immediately notify such transfer agent to place an irrevocable stop
      transfer instruction on all Securities beneficially owned by the undersigned
      until the end of the Restriction Period. This Letter Agreement shall be binding
      on successors and assigns of the undersigned with respect to the Securities
      and
      any such successor or assign shall enter into a similar agreement for the
      benefit of the Purchasers.

    

    

    ***
      SIGNATURE PAGE FOLLOWS***

    

    
      
        
        

      

      
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    This
      Letter Agreement may be executed in two or more counterparts, all of which
      when
      taken together may be considered one and the same agreement.

    

    

    __________________________

    Signature

    

    __________________________

    Print
      Name

    

    __________________________

    Position
      in Company

    

    Address
      for Notice:

    

    __________________________

     

     

    __________________________

     

     

    __________________________

    Number
      of
      shares of Common Stock

     

     

    __________________________________________________________________________________________

    Number
      of
      shares of Common Stock underlying subject to warrants, options, debentures
      or
      other convertible securities

    

    By
      signing below, the Company agrees to enforce the restrictions on transfer set
      forth in this Letter Agreement.

    

    QPC
      LASERS, INC.   

    

    By:
      _________________________________    

    Name:

    Title:

    

    
      
        
        

      

      
        3EXHIBIT
      10.45

     

    WAIVER
      AND AMENDMENT AGREEMENT

    

    This
      WAIVER
      AND AMENDMENT AGREEMENT
      (the
“Agreement”)
      is
      made and effective as of April __, 2008 (the “Effective
      Date”),
      by
      and among QPC Lasers, Inc., a Nevada corporation (the “Company”),
      the
      undersigned holders of the Company’s 10% Secured Convertible Debentures due
      April 16, 2009, and warrants to acquire shares of the Company’s common stock
      issued concurrently with such debentures (collectively, the “April
      Creditors”),
      and
      the undersigned holders of the Company’s 10% Secured Convertible Debentures due
      May 22, 2009, and warrants to acquire shares of the Company’s common stock
      issued concurrently with such debentures (collectively, the “May
      Creditors”)
      who
      are signatories hereto (the April Creditors and the May Creditors are herein
      collectively referred to as the “Creditors”).

    

    RECITALS

    

    WHEREAS,
      the April Creditors are parties to that certain Securities Purchase Agreement,
      dated as of April 16, 2007, by and among the Company and each holder of the
      Company’s 10% Secured Debentures due April 16, 2009 (collectively, the
“April
      Debenture Holders”),
      as
      amended by that certain Inter-Creditor, Waiver and Amendment Agreement, dated
      as
      of May 22, 2007 (the “Inter-Creditor
      Agreement”),
      by
      and among the Company, the April Debenture Holders and each holder
      (collectively, the “May
      Debenture Holders”)
      of the
      Company’s 10% Secured Convertible Debentures due May 22, 2009 (as amended, the
“April
      2007 Purchase Agreement”),
      and
      are holders of those 10% Secured Convertible Debentures due April 16, 2009
      (as
      amended by the Inter-Creditor Agreement, the “April
      2009 Debentures”)
      in the
      aggregate principal amount of $8,198,369.27 executed by the Company in favor
      of
      the April Debenture Holders.

    

    WHEREAS,
      the May Creditors are the parties to that certain Securities Purchase Agreement,
      dated as of May 22, 2007 (the “May
      2007 Purchase Agreement”),
      by
      and among the Company and the May Debenture Holders and are the holders of
      those
      10% Secured Convertible Debentures due May 22, 2009 (the “May
      2009 Debentures”)
      in the
      aggregate principal amount of $10,554,500 executed by the Company in favor
      of
      the May Debenture Holders.

    

    WHEREAS,
      in connection with the financings completed in April and May, 2007, the Company
      issued to the April Debenture Holders and the May Debenture Holders warrants
      to
      purchase shares of Company’s common stock, dated April 16, 2009 (the
“April
      Warrants”)
      and
      May 22, 2007 (the “May
      Warrants”),
      respectively. 

    

    WHEREAS,
      the Company is seeking to raise additional capital through the offer and sale
      of
      convertible notes and warrants [in the an aggregate principal amount of up
      to
      $3.5 million on substantially the terms set forth in the term sheet attached
      hereto as Exhibit A] (the “Convertible
      Note Financing”).

    

    WHEREAS,
      the parties hereto desire to enter into this Agreement to amend certain
      provisions of the April 2007 Purchase Agreement, the April 2009 Debentures,
      the
      April Warrants, the May 2007 Purchase Agreement, the May 2009 Debentures, and
      the May Warrants, and grant certain waivers under the April 2009 Debentures,
      April Warrants, May 2009 Debentures and May Warrants on the terms set forth
      herein to allow the Company to consummate the Convertible Note Financing.

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    WHEREAS,
      each of the April 2007 Purchase Agreement and April 2009 Debentures, and the
      May
      2007 Purchase Agreement and May 2009 Debentures, may be amended by the April
      Debenture Holders and May Debenture Holders holding at least 67% of the then
      outstanding April 2009 Debentures and May 2009 Debentures, respectively.

    

    WHEREAS,
      the April Warrant and May Warrant may be amended by holders of at least 67%
      of
      the then outstanding April Warrants and May Warrants, respectively.

    

    WHEREAS,
      the April Creditors and the May Creditors constitute the holders of at least
      67%
      of the outstanding April 2009 Debentures and April Warrants and May 2009
      Debentures and May Warrants, respectively.

    

    NOW,
      THEREFORE, in consideration of the mutual covenants herein, their respective
      performances and benefits pertaining to the Indebtedness, and other good and
      valuable consideration, the receipt and sufficiency of which are hereby
      acknowledged, the parties agree as follows:

    

    1. Incorporation
      of Recitals.
      The
      Recitals are incorporated herein by reference. 

    

    2. Waiver
      and Amendment to the April 2009Debentures.
      

    

    2.1 Waivers.
      

    

    (a) Each
      April Creditor hereby consents to the Convertible Note Financing and, solely
      in
      connection with the Convertible Note Financing, each April Creditor hereby
      waives the covenants set forth in Section 5(e)(i) and Section 5(e)(ii) of the
      April 2009 Debentures and any and all Events of Default under Section 7 of
      the
      April 2009 Debentures.

    

    (b) Each
      April Creditor, solely in connection with the Convertible Note Financing, hereby
      further waives any adjustments to the Conversion Price under Section 3(f)(i)
      of
      the April 2009 Debentures. 

    

    2.2 Amendment.
      As of
      the Effective Date, the April 2009 Debentures are hereby amended as follows:
      

    

    (a) The
      first
      sentence of Section 3(f) of the April 2009 Debentures is hereby deleted in
      its
      entirety and replaced with the following sentence: 

    

    “The
      Conversion Price shall be subject to adjustment from time to time as provided
      in
      this Section 3(f); provided, however, that no adjustment to the Conversion
      Price
      shall be made under Section 3(f)(i) or Section 3(f)(ii) below if Holders of
      at
      least 67% in principal amount of the then outstanding Debentures agree in
      writing to waive any such adjustment.”

    

    3. Waivers
      to April 2007 Purchase Agreement.
      Solely
      in connection with the Convertible Note Financing, each April Creditor hereby
      waives the covenants and restrictions set forth in each of Section 4(e)(i),
      entitled “Lock up of Issuance of Securities,” and Section 4(e)(ii), entitled
“Capital Raising Limitations,” of the April 2007 Purchase Agreement.

     

    
      
        
        

      

      
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    4. Waiver
      and Amendment to April Warrants.
      

    

    4.1 Waivers.
      Each
      April Creditor, solely in connection with the Convertible Note Financing, hereby
      waives any adjustments to the Exercise Price under Section 5(f) of the April
      Warrants. 

    

    4.2 Amendment.
      As of
      the Effective Date, the April Warrants are hereby amended as follows:

    

    The
      following sentence is hereby added immediately after the last sentence of
      Section 5(f) of the April Warrant: 

    

    “In
      addition, notwithstanding the above, there shall be no MFN Adjustment to the
      Exercise Price based upon any Dilutive Issuances if Holders of at least 67%
      in
      principal amount of the then outstanding Waiver agree in writing to waive any
      such adjustment.”

    

    5. Waiver
      and Amendment to the May 2009 Debentures.
      

    

    5.1 Waiver.
      

    

    (a) Each
      May
      Creditor hereby consents to the Convertible Note Financing, and solely in
      connection with the Convertible Note Financing, each May Creditor hereby waives
      the covenants set forth in Section 5(e)(i) and Section 5(e)(ii) of the May
      2009
      Debentures and any and all Events of Default under Section 7 of the May 2009
      Debentures.

    

    (b) Each
      May
      Creditor, solely in connection with the Convertible Note Financing, hereby
      further waives any adjustments to the Conversion Price under Section 3(f)(i)
      of
      the May 2009 Debentures. 

    

    5.2 Amendment.
      As of
      the Effective Date, the May 2009 Debentures are hereby amended as follows:
      

    

    (a) The
      first
      sentence of Section 3(f) of the May 2009 Debentures is hereby deleted in its
      entirety and replaced with the following sentence: 

    

    “The
      Conversion Price shall be subject to adjustment from time to time as provided
      in
      this Section 3(f); provided, however, that no adjustment to the Conversion
      Price
      shall be made under Section 3(f)(i) or Section 3(f)(ii) below if Holders of
      at
      least 67% in principal amount of the then outstanding Debentures agree in
      writing to waive any such adjustment.”

    

    6. Waivers
      to May 2007 Purchase Agreement.
      Solely
      in connection with the Convertible Note Financing, each May Creditor hereby
      waives the covenants and restrictions set forth in each of Section 4(e)(i),
      entitled “Lock up of Issuance of Securities,” and Section 4(e)(ii), entitled
“Capital Raising Limitations,” of the May 2007 Purchase Agreement. 

     

    
      
        
        

      

      
        3

        
          

        

      

      
        
        

      

    

     

    7. Waiver
      and Amendment to May Warrants.
      

    

    7.1 Waivers.
      Each
      May Creditor, solely in connection with the Convertible Note Financing, hereby
      waives any adjustments to the Exercise Price under Section 5(f) of the May
      Warrants.

    

    7.2 Amendment.
      As of
      the Effective Date, the May Warrants are hereby amended as follows:

    

    The
      following sentence is hereby added immediately after the last sentence of
      Section 5(f) of the May Warrant: 

    

    “In
      addition, notwithstanding the above, there shall be no MFN Adjustment to the
      Exercise Price based upon any Dilutive Issuances if Holders of at least 67%
      in
      principal amount of the then outstanding Waiver agree in writing to waive any
      such adjustment.”

    

    8. Miscellaneous.

    

    8.1 Effect
      of Amendment.
      This
      Agreement shall constitute an amendment to the April 2007 Purchase Agreement,
      the April 2009 Debentures, the May 2007 Purchase Agreement and the May 2009
      Debentures. Except as set forth expressly herein, all terms of the April 2007
      Purchase Agreement, the April 2009 Debentures, the May 2007 Purchase Agreement
      and the May 2009 Debentures, as amended hereby, shall be and remain in full
      force and effect. 

    

    8.2 Governing
      Law.
      THIS
      AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF
      THE
      STATE OF NEW YORK.

    

    8.3 Counterparts.
      This
      Agreement may be executed in any number of counterparts and by different parties
      hereto in separate counterparts, each of which when so executed shall be deemed
      to be an original and all of which taken together shall constitute but one
      and
      the same agreement.

    

    8.4 Binding
      Nature.
      This
      Agreement shall be binding upon and inure to the benefit of the parties hereto,
      their respective successors, successors-in-titles, and assigns.

    

    8.5 Entire
      Agreement.
      This
      Agreement reflect the entire agreement between the parties hereto with respect
      to the matters set forth herein and therein and supersede any prior agreements,
      commitments, drafts, communication, discussions and understandings, oral or
      written, with respect thereto.

    

    8.6 Further
      Assurances.
      Each
      party to this Agreement agrees to execute further instruments as may be
      necessary or desirable to carry out this Agreement, provided the party
      requesting such further action shall bear all related costs and
      expenses.

    

    

    *************************

    

    
      
        
        

      

      
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    [SIGNATURE
      PAGE TO QPC WAIVER AND AMENDMENT AGREEMENT]

    

    IN
      WITNESS WHEREOF, this Agreement has been duly executed by the Creditors as
      of
      the day and year first written above.

    

    

    COMPANY:

    

    QPC
      LASERS, INC.

    

    _________________________

    By:

    Title:

    

    Address
      for Notice:

     

    _________________________

    

    _________________________

    

    

    [SIGNATURE
      PAGES CONTINUE]

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    [SIGNATURE
      PAGE TO QPC

    WAIVER
      AND AMENDMENT AGREEMENT]

    

    

    APRIL
      CREDITORS:

    

    Print
      Name: ___________________________  

    

    By:
      _________________________________ 

    Name:

    Title:

    

    Address
      for Notice:

    

    _________________________

    

    _________________________

     

    

    [SIGNATURE
      PAGES CONTINUE]

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    [SIGNATURE
      PAGE TO QPC

    WAIVER
      AND AMENDMENT AGREEMENT]

    

    

    MAY
      CREDITORS:

    
      

      Print
        Name: ___________________________  

      

      By:
        _________________________________ 

      Name:

      Title:

      

      Address
        for Notice:

      

      _________________________

      

      _________________________

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