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.
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 07, 1992
- Accession Number
- ADA254697
Entities
People
- Shengsan Li
Organizations
- University of Florida