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FOUR-LEVEL SOLID-STATE LASER IN THE 1.5-4 UM RANGE

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N/A
Agency Tracking Number: 10178
Amount: $49,935.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1989
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
16150 Ne 85th St - Ste 217
Redmond, WA 98052
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Larry G Deshazer
 (206) 882-7528
Business Contact
Phone: () -
Research Institution
N/A
Abstract

MULTI-SPECTRAL LASER COUNTERMEASURE SYSTEMS REQUIRE SOURCES IN THE MID-INFRARED. SOLID-STATE LASER SOURCES UNDER DEVELOPMENT ARE QUASITHREE LEVEL LASERS, SUCH AS TM:HO:YAG (2.1 UM). OPERATION OF QUASITHREE LEVEL LASERS IS TEMPERATURE DEPENDENT AND SUCH DEVICES HAVE INCREASED THRESHOLDS AND REDUCED EFFICIENCIES AT ROOM TEMPERATURE. WE PROPOSE A FOUR-LEVEL SOLID-STATE LASER BASED ON A COMBINATION OF RARE-EARTH IONS IN A FLUORIDE HOST. PREVIOUSLY WE CONDUCTED AN INVESTIGATION OF THESE IONS DOPED INTO AN OXIDE GARNET HOST AND DEMONSTRATED THE FEASIBILITY OF THE SCHEME. THE FLUORIDE HOST SHOULD GREATLY IMPROVE THE LASER PERFORMANCE OF THE ION COMBINATION. WE WILL GROW THE CO-DOPED FLUORIDE CRYSTAL, EXAMINE ITS LASER POTENTIAL BY SPECTROSCOPY AND PERFORM A LASER PUMPED LASER EXPERIMENT. THE CO-DOPED SYSTEM WILL BE PUMPED BY VISIBLE SOURCES FOR INITIAL INVESTIGATIONS BUT CAN BE PUMPED BY GAALAS DIODES IN THE 750-850 NM RANGE FOR HIGHER EFFICIENCY. THE LASING ION HAS FOUR EMISSION BANDS, NOT TERMINATING IN THE GROUND STATE, FROM 1.5 TO 4 UM INCLUDING A TRANSITION IN THE 'EYE SAFE' (1.4-1.85 UM) REGIME. THIS LASER COULD BE A DIRECT SOURCE FOR APPLICATIONS IN THE MIR AS WELL AS BEING AN EFFICIENT PUMP SOURCE FOR OPTICAL PARAMETRIC OSCILLATORS.

* Information listed above is at the time of submission. *

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