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

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$99,000.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
D11PC20097
Agency Tracking Number:
10SB3-0077
Solicitation Year:
2010
Solicitation Topic Code:
SB103-005
Solicitation Number:
2010.3
Small Business Information
OptiGrate Corp.
3267 Progress Drive, Orlando, FL, -
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
120669085
Principal Investigator:
Christine Spiegelberg
Director, Fiber Lasers
(407) 381-4115
CSpiegelberg@OptiGrate.com
Business Contact:
Igor Ciapurin
Program Manager
(407) 381-4115
ICiapurin@OptiGrate.com
Research Institution:
Stub




Abstract
The proposed innovation is based on a combination of two new technologies developed at the Center for Laser Technology at the Fraunhofer Institute and OptiGrate Corp. and aims to integrate advanced packaging of single emitter laser diodes, spectral and angular narrowing of these diodes by volume Bragg gratings in external resonators, and spectral combining of laser beams by a stack of volume Bragg gratings, all in a robust compact laser module. The use of individual laser diodes instead of diode bars ensures high reliability and very high brightness of the combined of output power from many single emitters without the need for beam transformation. By spectrally combining several high power modules that have been locked to a very narrow linewidth our approach will result in a dramatic increase of the spectral and spatial brightness of these laser modules compared to conventional diode bars. Efficient spectral combining of beams from several modules with no penalty in power will result in a spectrum narrower than that from any conventional high power laser bar. The brightness of the proposed device will be about 1 order of magnitude higher than the current state of the art and will facilitate a 5 kW pumping source coupled to 100 um 0.22 NA fiber.

* information listed above is at the time of submission.

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