Compact stretcher/compressor for high power ultrafast lasers based on volume chirped Bragg gratings in PTR glass

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-12-C-0239
Agency Tracking Number: N081-047-0519a
Amount: $749,987.00
Phase: Phase II
Program: SBIR
Awards Year: 2012
Solicitation Year: 2008
Solicitation Topic Code: N08-047
Solicitation Number: 2008.1
Small Business Information
OptiGrate Corp.
3267 Progress Drive, Orlando, FL, -
DUNS: 120669085
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Vadim Smirnov
 CTO and VP, Product Devel
 (407) 381-4115
 vsmirnov@optigrate.com
Business Contact
 Igor Ciapurin
Title: Program Manager
Phone: (407) 381-4115
Email: iciapurin@optigrate.com
Research Institution
 Stub
Abstract
The objective of this proposal is to extend the technology of chirped pulse amplification in ultrashort pulse lasers based on chirped volume Bragg gratings (CBGs) to higher stretching/ compression ratio and make the device more robust. In Phase I OptiGrate demonstrated high quality stretching and compression by CBGs fabricated in photo-thermo-refractive (PTR) glass. Phase II research and development enabled reliable manufacturing of CBGs designed for ultrashort pulse laser systems and extended the stretching time to the unprecedented level of 1 ns while this pulse could be compressed to the level of 200 fs. Record average power of 200 W has been demonstrated. The benefits of usage of such gratings are based on a compact geometry, unprecedented stability to optical radiation, high diffraction efficiency, absence of polarization dependence and durability to environmental conditions. However the most strategic importance of this technology is its scalability to large apertures and thickness which enable scaling to higher power and longer stretching. The specific target set for Phase II.5 of this project is a demonstration of multipass CBGs where 2-ns stretching time which is combined with large aperture up to 1010 mm capable of compressing pulses with energies more than 20 mJ.

* information listed above is at the time of submission.

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