A SOLID STATE BLUE LASER BASED ON GAN/ALXGAL-XN PN JUNCTION HETEROSTRUCTURE

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$49,994.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
13179
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Apa Optics Inc
2950 Ne 84th Ln, Blaine, MN, 55434
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr M Asif Khan
(612) 784-4995
Business Contact:
() -
Research Institution:
n/a
Abstract
IN THIS PROPOSAL WE DISCUSS THE DEVELOPMENT OF A BLUE (POTENTIALLY GREEN AND OTHER WAVELENGTHS ALSO) SOLID STATE LASER BASED ON PN-JUNCTION HETEROSTRUCTURES IN THE AIXGA1-XN MATERIAL SYSTEM. THESE AIXGA1-XN BASED LASERS WILL BE IDEAL FOR USES IN OPTICAL RECORDING, COMMUNICATION AND LARGE SCREEN DISPLAY SYSTEMS. ESSENTIALLY ALL APPLICATIONS CURRENTLY BEING ADDRESSED BY ARGON-ION LASERS WILL BE IMPACTED. WE (AND OTHER GROUPS) HAVE DEPOSITED HIGH OPTICAL QUALITY (PHOTOLUMINESCENCE) N-TYPE SINGLE CRYSTALS AND QUANTUM WELLS OF AIXGA1-XN USING ATOMIC LAYER MOCVD. STIMULATED EMISSION HAS ALSO BEEN DEMONSTRATED BY PHOTOPUMPING N-TYPE MATERIAL CAVITIES. SEVERAL P-TYPE DOPANTS CAN BE INCORPORATED IN AIXGA1-XN (BANDGAP 3.6 TO 6.2 EV) WITH ZINC GIVING A STRONG RADIATIVE TRANSITION AT 470-480 NM. USING THIS WE HAVE DEMONSTRATED BLUE MIS EMITTERS. ONLY RECENTLY USING MOCVD P-TYPE GAN HAS FOR THE FIRST TIME BEEN DEPOSITED. MUCH EFFORT IS STILL NEEDED TO IMPROVE THE DOPING LEVELS, PHOTOLULMINESCENCE OF P-DOPED MATERIAL, AND THE P-DOPING OF THE ALLOY. THIS WILL BE THE PRIME FOCUS OF OUR PHASE I PROGRAM. LASER ASSISTED ALE WILL BE USED TO DEPOSIT AND CHARACTERIZE AIXGA1-XN PN-JUNCTIONS. THESE FORM THE BASIS OF AN AIXGA1-XN BASED BLUE LASER TO BE FABRICATED AND CHARACTERIZED IN PHASE II. ANTICIPATED BENEFITS/POTENTIAL COMMERCIAL APPLICATIONS - THE LASERS WE PLAN TO DEVELOP WILL BE IDEAL FOR ANY APPLICATION CURRENTLY ADDRESSED USING ARGON ION OR OTHER GAS LASERS. THEY WILL INCREASE OPTICAL RECORDING DENSITY BY A FACTOR OF FIVE. WE FEEL THEY WILL ALSO IMPACT THE BLUE-GREEN COMMUNICATION AREA. KEY WORDS - AIXGA1-XN, PN-JUNCTIONS, ATOMIC LAYER MOCVD, MICROLASERS.

* information listed above is at the time of submission.

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