Electrically manipulating the optical sensitivity function in quantum wells for nanoacoustic wave detection
Journal
Applied Physics Letters
Journal Volume
95
Journal Issue
14
Date Issued
2009
Author(s)
Wang, Pei-Hsun
Wen, Yu-Chieh
Guol, Shi-Hao
Lai, Chih-Ming
Lin, Hung-Cheng
Chen, Peng-Ren
Shi, Jin-Wei
Chyi, Jen-Inn
Abstract
We demonstrate electrical control of the optical sensitivity function in multiple quantum wells (MQWs) for nanoacoustic wave detection. This is realized by bias controlling the quantized level and the quasi-Fermi level of carrier-populated InGaN/GaN MQWs. Experimentally, a strongly bias-dependent optical sensitivity was observed when the optical probe transition was near the quasi-Fermi level, which agrees well with the theoretical prediction.
Type
journal article