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1 kW Fiber Lasers and Alignment Free SBC

Award Information

Department of Defense
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Aculight Corporation
22121 20th Avenue SE Bothell, WA 98021-4408
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2007
Title: 1 kW Fiber Lasers and Alignment Free SBC
Agency / Branch: DOD / NAVY
Contract: N68936-07-C-0024
Award Amount: $1,999,731.00


Spectral Beam Combination (SBC) has been proven as a scalable beam combining approach for high power fiber lasers. Demonstrations at Aculight have shown 522 Watts of near diffraction limited power from three combined fiber laser sources; and the dispersive element, a Multi-Layer-Dielectric (MLD) diffraction grating, will operate well above 1.5 kWatts/cm2 of incident power allowing ~100 kWatt sources to be feasible with a relatively small grating of 10x10 cm2 while maintaining excellent beam quality. In this proposed work, Aculight will increase its single fiber laser power from ~300 Watts to over 1 kWatt, suitable for Spectral Beam Combination (SBC), delivering properties including: polarized output, narrow bandwidth, and diffraction limited beam quality. The laser will be all-in-fiber-pumped geometry (no free space pump components). An alignment-free SBC fiber tray assembly will be engineered and tested with the multiple ~300 Watt fiber lasers available at Aculight; and then tested using the 1 kWatt fiber laser to be demonstrated in the early part of this work. These results will enable a clear pathway to a 10 kWatt demonstration, and an eventual demonstration of SBC high power fiber sources to the 100 kWatt level.

Principal Investigator:

Thomas Loftus
Principal Investigator

Business Contact:

Dennis D. Lowenthal
VP of Research & Developm
Small Business Information at Submission:

22121 20th Avenue SE Bothell, WA 98021

EIN/Tax ID: 911581683
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No