Source: https://patents.google.com/patent/US10205295B2/en
Timestamp: 2020-04-01 18:38:50
Document Index: 569705033

Matched Legal Cases: ['§ 119', 'application No. 60', 'Application No. 820', 'Application No: 820', 'Application No. 820', 'Application No: 820', 'Case No: 08']

US10205295B2 - Chirped Bragg grating elements - Google Patents
Chirped Bragg grating elements Download PDF
US10205295B2
US10205295B2 US15/702,946 US201715702946A US10205295B2 US 10205295 B2 US10205295 B2 US 10205295B2 US 201715702946 A US201715702946 A US 201715702946A US 10205295 B2 US10205295 B2 US 10205295B2
US15/702,946
US20180013255A1 (en
Boris Leonidovich Volodin
Vladimir Sinisa Ban
Necsel Intellectual Property Inc
2003-07-03 Priority to US48485703P priority Critical
2004-04-22 Priority to US56452604P priority
2004-07-02 Priority to US10/884,524 priority patent/US7298771B2/en
2006-04-19 Priority to US11/407,795 priority patent/US8306088B2/en
2012-09-28 Priority to US13/629,899 priority patent/US9793674B2/en
2017-09-13 Priority to US15/702,946 priority patent/US10205295B2/en
2017-09-13 Application filed by Necsel Intellectual Property Inc filed Critical Necsel Intellectual Property Inc
2018-01-11 Publication of US20180013255A1 publication Critical patent/US20180013255A1/en
2019-02-12 Publication of US10205295B2 publication Critical patent/US10205295B2/en
230000003287 optical Effects 0 claims description 52
230000002123 temporal effects Effects 0 abstract description 10
This application is a continuation of U.S. patent application Ser. No. 13/629,899, filed Sep. 28, 2012, which is a division of U.S. patent application Ser. No. 11/407,795, filed Apr. 19, 2006, which is now U.S. Pat. No. 8,306,088, issued Nov. 6, 2012, which is a division of U.S. patent application Ser. No. 10/884,524, filed Jul. 2, 2004, which is now U.S. Pat. No. 7,298,771, issued Nov. 20, 2011, which claims benefit under 35 U.S.C. § 119(e) of provisional U.S. patent application No. 60/484,857, filed Jul. 3, 2003, and 60/564,526, filed Apr. 22, 2004. The respective disclosures of each of the above-referenced patent applications are incorporated herein by reference.
FIG. 26 depicts a method for fabricating VBG elements.
In the manufacturing of VBG elements, it is typically desirable to minimize the costs of production of such elements. For that reason, holographic recording of each element individually is likely to be cost-prohibitive for most or all of the high-volume applications. A method for cost-effective production of such elements will now be described.
Such a method, depicted in FIG. 26, exploits the unique property of a hologram, whereupon each fractional piece of the recorded hologram possesses full and complete information about the recorded object. When applied to the VBG filters recorded on the PRG plates, it means that each piece of such plate, or wafer, should have the same filtering properties as the wafer in whole. For that reason, a large-size wafer 1500 can be diced, using a suitable cutting device, such as a saw, for example, into a large number of relatively small individual VBG elements 1502, each with complete filter functionality. In following this process, one could significantly reduce the number of recording and testing operations, thereby reducing the manufacturing costs of the VBG elements.
1. Apparatus for compressing laser pulses, the apparatus comprising:
an optical amplifier; and
a volume Bragg grating element comprising a three-dimensional bulk of optical material having a Bragg grating formed therein, the Bragg grating defining a Bragg grating vector and having a grating period that varies as a function of position along the Bragg grating vector,
wherein the Bragg grating element is configured to compress chirped laser pulses received from the optical amplifier.
2. The apparatus of claim 1, wherein the Bragg grating element is configured to receive the chirped laser pulses from the optical amplifier.
3. The apparatus of claim 1, wherein the Bragg grating defines an entrance aperture of the Bragg grating element and an exit aperture of the Bragg grating element, and wherein the entrance aperture and exit aperture coincide.
4. The apparatus of claim 3, wherein the entrance aperture defines a plane, and the Bragg grating vector is normal to the plane defined by the entrance aperture.
5. The apparatus of claim 3, wherein the Bragg grating element is configured such that an incident chirped laser pulse that is incident on the entrance aperture is compressed and reflected through the exit aperture as a compressed laser pulse.
6. The apparatus of claim 5, wherein the incident chirped laser pulse has first pulse width before incidence on the entrance aperture, and the compressed laser pulse has a second pulse width after reflection through the exit aperture, and wherein the second pulse width is less than first pulse width.
7. The apparatus of claim 6, wherein the second pulse width is less than 10 picoseconds.
8. The apparatus of claim 1, wherein the Bragg grating element is configured such that an incident chirped laser pulse that is incident on the Bragg grating element is compressed and reflected back out of the Bragg grating element as a compressed laser pulse.
9. The apparatus of claim 8, wherein the incident chirped laser pulse has first pulse width before incidence on the Bragg grating element, and the compressed laser pulse has a second pulse width after reflection out of the Bragg grating element, and wherein the second pulse width is less than first pulse width.
10. The apparatus of claim 9, wherein the second pulse width is less than 10 picoseconds.
11. Apparatus for compressing laser pulses, the apparatus comprising:
wherein the Bragg grating element is configured such that an incident chirped laser pulse that is incident on the Bragg grating element from the optical amplifier is compressed and reflected back out of the Bragg grating element as a compressed laser pulse.
12. The apparatus of claim 11, wherein the incident chirped laser pulse has first pulse width before incidence on the Bragg grating element, and the compressed laser pulse has a second pulse width after reflection out of the Bragg grating element, and wherein the second pulse width is less than first pulse width.
13. The apparatus of claim 12, wherein the second pulse width is less than 10 picoseconds.
14. The apparatus of claim 11, wherein the Bragg grating defines an entrance aperture of the Bragg grating element and an exit aperture of the Bragg grating element, wherein the entrance aperture and exit aperture coincide, wherein the entrance aperture defines a plane, and wherein the Bragg grating vector is normal to the plane defined by the entrance aperture.
15. The apparatus of claim 14, wherein the Bragg grating element is configured such that the incident chirped laser pulse is incident on the entrance aperture and reflected through the exit aperture as the compressed laser pulse.
16. The apparatus of claim 15, wherein the incident chirped laser pulse has first pulse width before incidence on the entrance aperture, and the compressed laser pulse has a second pulse width after reflection through the exit aperture, and wherein the second pulse width is less than first pulse width.
17. Apparatus for compressing laser pulses, the apparatus comprising:
wherein the Bragg grating element defines an entrance aperture of the Bragg grating element and an exit aperture of the Bragg grating element, wherein the entrance aperture and exit aperture coincide, and
wherein the Bragg grating element is configured such that an incident chirped laser pulse that is incident on the entrance aperture from the optical amplifier is reflected through the exit aperture as a compressed laser pulse.
18. The apparatus of claim 17, wherein the incident chirped laser pulse has first pulse width before incidence on the entrance aperture, and the compressed laser pulse has a second pulse width after reflection through the exit aperture, and wherein the second pulse width is less than first pulse width.
19. The apparatus of claim 18, wherein the second pulse width is less than 10 picoseconds.
20. The apparatus of claim 17, wherein the entrance aperture defines a plane, and wherein the Bragg grating vector is normal to the plane defined by the entrance aperture.
US15/702,946 2003-07-03 2017-09-13 Chirped Bragg grating elements Active US10205295B2 (en)
US48485703P true 2003-07-03 2003-07-03
US56452604P true 2004-04-22 2004-04-22
US10/884,524 US7298771B2 (en) 2003-07-03 2004-07-02 Use of volume Bragg gratings for the conditioning of laser emission characteristics
US11/407,795 US8306088B2 (en) 2003-07-03 2006-04-19 Bragg grating elements for the conditioning of laser emission characteristics
US13/629,899 US9793674B2 (en) 2003-07-03 2012-09-28 Chirped Bragg grating elements
US15/702,946 US10205295B2 (en) 2003-07-03 2017-09-13 Chirped Bragg grating elements
US13/629,899 Continuation US9793674B2 (en) 2003-07-03 2012-09-28 Chirped Bragg grating elements
US20180013255A1 US20180013255A1 (en) 2018-01-11
US10205295B2 true US10205295B2 (en) 2019-02-12
ID=34118723
US10/884,524 Active US7298771B2 (en) 2003-07-03 2004-07-02 Use of volume Bragg gratings for the conditioning of laser emission characteristics
US11/407,795 Active US8306088B2 (en) 2003-07-03 2006-04-19 Bragg grating elements for the conditioning of laser emission characteristics
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US11/407,796 Active US7248617B2 (en) 2003-07-03 2006-04-19 Use of volume bragg gratings for the conditioning of laser emission characteristics
US11/407,794 Active 2024-08-20 US7545844B2 (en) 2003-07-03 2006-04-19 Use of Bragg grating elements for the conditioning of laser emission characteristics
US11/481,475 Active - Reinstated 2025-01-18 US7590162B2 (en) 2003-07-03 2006-07-06 Chirped bragg grating elements
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US11/481,445 Active 2025-01-09 US7633985B2 (en) 2003-07-03 2006-07-06 Apparatus and methods for altering a characteristic of light-emitting device
US11/582,271 Abandoned US20070047608A1 (en) 2003-07-03 2006-10-17 Use of volume bragg gratings for the conditioning of laser emission characteristics
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US12/129,767 Active 2024-07-13 US7796673B2 (en) 2003-07-03 2008-05-30 Apparatus and methods for altering a characteristic of a light-emitting device
US13/629,899 Active US9793674B2 (en) 2003-07-03 2012-09-28 Chirped Bragg grating elements
US15/702,946 Active US10205295B2 (en) 2003-07-03 2017-09-13 Chirped Bragg grating elements
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