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New Mid-IR Laser Power Scaling Technology via Fiber Combiner

Award Information
Agency: Department of Defense
Branch: Army
Contract: W56KGY-17-C-0004
Agency Tracking Number: A2-6327
Amount: $995,370.36
Phase: Phase II
Program: SBIR
Solicitation Topic Code: A15-076
Solicitation Number: 2015.1
Solicitation Year: 2015
Award Year: 2017
Award Start Date (Proposal Award Date): 2016-11-30
Award End Date (Contract End Date): 2018-12-31
Small Business Information
300 Ringgold Industrial Parkway
Danville, VA 24540
United States
DUNS: 623702557
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Francois Chenard
 (434) 483-4304
Business Contact
 Francois Chenard
Phone: (434) 483-4304
Research Institution

Beam combining devices are extensively used to achieve power levels that cannot be reached by the use of just a single laser. To achieve beam combination these devices commonly employ free-space optical components, like mirrors, gratings and lenses. The use of free-space optics has several issues such as sensitivity to thermal and vibration induced misalignment, complex packaging and bulky design. Fiber beam combining, while also allowing the achievement of high power levels, has the additional benefit of being compact and robust permitting simple packaging and meeting stringent environmental requirements like those encountered in mid-infrared countermeasure (IRCM) applications. Mid-wave infrared (MWIR) fiber combiners are currently not available but are needed for next generation IRCM laser systems. Chalcogenide fiber offers a good building block for such device offering low-loss transmission in the MWIR (2-5um) and excellent power handling. Considerable progress has been made in all-fiber beam combiners based on chalcogenide glass fibers, however further improvement to the fabrication technology and combiner design is needed to meet IRCM requirements. The proposed effort will demonstrate the feasibility of developing high-power low-loss fiber combiner based on chalcogenide glass fibers. This work will bring modifications and improvements to current device fabrication processes and design.

* Information listed above is at the time of submission. *

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