Built-In Filament Control for Long Lifetime in Broad Area Diode Lasers

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,918.00
Award Year:
2006
Program:
STTR
Phase:
Phase I
Contract:
W31P4Q-06-C-0421
Award Id:
77886
Agency Tracking Number:
06ST1-0081
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
5408 NE 88th Street, Bldg E, Vancouver, WA, 98665
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
799811646
Principal Investigator:
Paul Crump
Program Manager
(360) 713-5161
paul.crump@nlight.net
Business Contact:
David Gustafson
Mgr Advanced Technology P
(360) 566-4471
david.gustafson@nlight.net
Research Institution:
UNIV. OF ILLINOIS
Kent Choquette
UNIV. OF ILLINOIS
Urbana, IL, 61801
(217) 265-0563
Nonprofit college or university
Abstract
The elimination or suppression of filaments through the use of photonic crystal structures is proposed in this STTR. Filament formation is a well-known problem in high-power, broad area semiconductor diode lasers, often leading to catastrophic failure of the diodes. The diode failure also normally results in a system failure in the systems in which the diodes are employed. By using a bi-directional periodic structure, milled into the laser using a Focused Ion Beam, it is shown that mode control can be exercised over the optical mode of the high-power, broad area diode laser. Mode control serves to eliminate or suppress filament formation in the diode laser, thereby eliminating or suppressing this pernicious failure mode.

* information listed above is at the time of submission.

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