Wavelength-Stabilized, High-Brightness Diode Laser Pumps for High-Power Fiber Lasers

Period of Performance: 03/23/2011 - 03/31/2012

$98.6K

Phase 1 SBIR

Recipient Firm

Nlight Photonics
5408 NE 88th Street, Building E
Vancouver, WA 98665
Principal Investigator

Abstract

nLight proposes the development of a wavelength-stabilized 5 kW, 105 µm, 0.22NA fiber-coupled 976 nm diode laser pump system with a final predicted power conversion efficiency of >45% and mass-to-power ratio of 50 individual channels (each operating at 100 W) can be efficiently fit within a 3 nm total bandwidth, ensuring excellent absorption by the 976-nm transition in Yb-doped fiber. This effort will represent the confluence of multiple technologies in which nLight has deep experience, making nLight well-positioned to meet all of the specifications set forth in the solicitation. During the Phase 1 program, nLight will investigate design considerations for the wavelength beam combining technique and demonstrate feasibility of the approach by applying it to a 2-channel 200 W (rated), 105 µm, 0.22NA fiber-coupled system.