Development of Ultra-Low Noise, High Sensitivity Planar Metal Grating Coupled AlGaAs/GaAs Multiquantum Well IR Detectors for Focal Plane Array Staring IR Sensor Systems.
Quarterly progress rept. no. 4, 1 May-31 Jul 92,
FLORIDA UNIV GAINESVILLE DEPT OF ELECTRICAL ENGINEERING
Pagination or Media Count:
Project objectives include the following 1 To develop low dark current and high detectivity planar metal grating coupled bound-to-miniband III-V multiquantum well infrared photodetectors QWIPs for 8 to 12 microns FPA and IR sensor applications. 2 To develop other new types of III-V multicolor QWIPs with broad and multicolor infrared spectral response 5 to 18 microns. 3 To conduct theoretical and experimental studies of the planar metal grating-coupled structures for normal incident illumination on the QWIPs. Different metal grating coupler structures using 1-D line-grating and 2-D cross-grating for the QWIPs will be studied in order to achieve high coupling efficiency under normal front- and back- illuminations. and 4 To perform theoretical and experimental studies of dark current, photocurrent, optical absorption, spectral responsivity, noise, and detectivity in different types of QWIPs.
- Optical Detection and Detectors
- Electrooptical and Optoelectronic Devices