High-Efficiency, High-Temperature Laser Diodes for Naval High-Energy Laser Applications

Award Information
Agency:
Department of Defense
Amount:
$149,426.00
Program:
SBIR
Contract:
N68936-13-C-0121
Solitcitation Year:
2012
Solicitation Number:
2012.1
Branch:
Navy
Award Year:
2013
Phase:
Phase II
Agency Tracking Number:
N121-013-1178
Solicitation Topic Code:
N121-013
Small Business Information
nLight Photonics
WA, Vancouver, WA, 98665-0990
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
799811646
Principal Investigator
 Zhigang Chen
 Princpal Investigator
 (360) 566-4460
 zhigang.chen@nlight.net
Business Contact
 Huimin Huang
Title: Staff Accountant
Phone: (360) 566-4660
Email: huimin.huang@nlight.net
Research Institution
 Stub
Abstract
Based on the promising results obtained under Navy Phase I SBIR funding, nLight proposes a Phase II continuation toward the development of fiber-coupled high power and high efficiency diode laser pumps around 975 nm that operate at high ambient temperatures. Under the Phase I SBIR base program, nLight designed, demonstrated, and delivered to Navy a 30-W, 975-nm fiber-coupled (200µm / 0.15 NA) laser module with fiber-coupled power conversion efficiency of>63% at 25°C. This is achieved through diode laser epitaxy design optimization, improvement in heatsink thermal resistance for lower diode junction temperature, and improvement in the optical-to-optical fiber-coupling efficiency of the diode laser pump. In the proposed Phase II effort, nLight will address the key area of required improvement high temperature operation while maintaining high efficiency and scaling up power. At the end of the Phase II base program, nLight will deliver to Navy (or a recipient of its choosing) a 25-W, 975-nm fiber-coupled (200µm/0.22 NA) laser module with a power conversion efficiency of>57% at 70°C. At the end of the Phase II option program, nLight will deliver to Navy a>100W, 975-nm fiber-coupled (200µm/0.22 NA) laser module with>70% conversion efficiency at 70°C.

* information listed above is at the time of submission.

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