Birefringence and absorption modulation under electron heating in a longitudinal electric field in the tunnel-coupled GaAs/AlGaAs quantum wells have been found and investigated in the spectral region corresponding to intersubband electron transitions. The observed phenomena are explained by electron
✦ LIBER ✦
Controlled amplification, absorption, and dispersion of weak far-infrared lights in a coupled-quantum-well structure
✍ Scribed by Xiangying Hao; Chunling Ding; Xin-You Lü; Jiahua Li; Xiaoxue Yang
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 344 KB
- Volume
- 42
- Category
- Article
- ISSN
- 1386-9477
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Intersubband transitions in doped quantum wells are of fundamental scientific interest, as well as technological interest for potential devices. One of the important characteristics of the transitions is their linewidth. We present the results of linear absorption spectroscopy on a coupled double as