CW Mid-Infrared Tandem OPO Source

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$750,000.00
Award Year:
1997
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
32293
Agency Tracking Number:
32293
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
40 Lake Bellevue, Suite 100, Bellevue, WA, 98005
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dennis Lowenthal
(206) 451-9558
Business Contact:
() -
Research Institution:
n/a
Abstract
CW mid-IR sources, capable of delivering 5 Watts of average power, are required in the 2-5 micron range for IR counter measures. To date, solid state laser approaches have been limited to less than 1-2 Watts of average power due to absorption and adverse thermal effects in the nonlinear materials. Our approach to solving this problem is to use a relatively new nonlinear material, bulk periodically poled LiNbO3 (PPLN), as the converter for a conventional cw Nd:YAG pump laser source. The innovation in this work includes: (1) the use of two PPLN OPO devices in series, a "tandem" OPO, capable of delivering wavelengths in all three optical bands of interest, simultaneously; (2) PPLN operated at these wavelengths has an extremely wide angular and temperature acceptance that makes it relatively insensitive to problems encountered with other materials such as AgGaSe2; (3) PPLN has extremely large nonlinear gain that makes it possible to extract significant idler power in the presence of large idler absorption, 30o/ocm. Aculight has developed an OPO model for PPLN operated with large idler absorption that predicts >5 Watts of 4.5 micron output power with 40 Watts of 1 micron input pump power. Aculight will make available a 60 Watt output power cw Nd:YAG pump laser source with excellent beam quality that will allow testing of these devices at power levels a factor of 4-5 higher than that available to date.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government