1-picosecond InGaAs Photodetector For Operation At 1300-1600 Nm

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$74,400.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
19648
Agency Tracking Number:
19648
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Picotronix, Inc. (Currently Picometrix, LLC)
Po Box 130243, Ann Arbor, MI, 48113
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Steven L. Williamson
(313) 763-4881
Business Contact:
() -
Research Institution:
n/a
Abstract
THE OBJECTIVE OF THIS PROPOSAL IS TO DEVELOP A 1-PICOSECOND MONOLITHICALLY INTEGRATABLE PHOTODETECTOR WITH 0.2 A/W RESPONSIVITY FOR ULTIMATE USE AT 1600 NM. THE DETECTOR WILL RELY ON THE INTRISIC CARRIER LIFETIME OF THE SEMICONDUCTOR FOR ITS SPEED AND ON SUBMICROMETER-SPACED INTERDIGITATED FINGER ELECTRODES FOR ITS SENSITIVITY. ONE SEMICONDUCTOR ALREADY DEVELOPED FOR SHORTER WAVELENGTH APPLICATIONS IS LOW-TEMPERATURE-MBE-GROWN GaAs (LT-GaAs). THIS MATERIAL IS RICH IN ARSENIC DEEP-LEVEL TRAPPING CENTERS, RESULTING IN ITS SUBPICOSECOND CARRIER LIFETIME. USING LT-GaAs, WE HAVE RECENTLY DEVELOPED A PHOTODETECTOR, SENSITIVE OUT TO 800 NM, THAT HAS A 1.2 PICOSECOND RESPONSE TIME AND 0.1 A/W RESPONSIVITY. THIS IS THE FASTEST PHOTODETECTOR IN THE WORLD. WE NOW WISH TO APPLY THE TECHNIQUE OF LOW-TEMPERATUREMBE TO InGaAs MATERIAL FOR DEVELOPMENT OF PICOSECOND PHOTODETECTORS SENSITIVE OUT TO 1600 NM. DURING THIS PHASE I PROGRAM, WE WILL INVESTIGATE THE LOW-TEMPERATURE GROWTH OF InGaAs ON GaAs. WE HAVE FOUND THAT BY GROWING A LATTICE-MISMATCHED LAYER, WE CAN OBTAIN HIGH-RESISTIVITY MATERIAL WITH NO LOSS IN SENSITIVITY. WE WILL STUDY THE EPILAYER SYSTEM IN TERMS ITS LIFETIME, MOBILITY, DARK CURRENT, AND VOLTAGE HOLD-OFF, AS FUNCTIONS OF THE GROWTH-AND POST-ENNEALING TEMPERATURES. WE WILL THEN FABRICATE PHOTODETECTORS AND CHARACTERIZE USING PICOSECOND ELECTRO-OPTIC SAMPLING.

* 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