Highly Reliable, High Power Cryogenic Red Diode Lasers

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0006-06-C-7453
Agency Tracking Number: 053-1416
Amount: $99,673.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: MDA05-014
Solicitation Number: 2005.3
Small Business Information
NLIGHT PHOTONICS
5408 NE 88th Street, Bldg E, Vancouver, WA, 98665
DUNS: 799811646
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul Crump
 Principal Scientist
 (360) 518-1081
 paul.crump@nlight.net
Business Contact
 David Gustafson
Title: Manager, Advanced Technology Prog.
Phone: (360) 566-4471
Email: david.gustafson@nlight.net
Research Institution
N/A
Abstract
The objective of this proposal is to eliminate the catastrophic optical damage that limits the peak operating power of cryogenically operated visible red (630-nm) laser diodes. The method to be applied is band gap disordering by Zn-diffusion. This will be the first time this technique has ever been applied to high power visible red laser diodes. It will also be the first application of band gap disordering in a system intended for cryogenic operation. nLight Photonics, through programs with Directed Energy Solutions, has pushed the absolute state of the art in red diode lasers operating at 665-nm (room temperature) and 630-nm (cryogenic temperatures). Peak powers of 90W and 50% electrical-to-optical efficiency have been achieved from a 1-cm wide bar of 1-mm cavity length. Individual emitters have achieved 6.3W peak power while operating at room temperature. Through these programs the limiting mechanism in achieving higher powers is no longer the thermal escape of carriers, but the catastrophic failure of the optical facets under the intense optical field power densities.

* information listed above is at the time of submission.

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