Ganichev, SD and Ketterl, H and Prettl, W (2003) Fast room temperature detection of state of circular polarization of terahertz radiation. INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 24 (6). pp. 847-853. ISSN 0195-9271,
Full text not available from this repository. (Request a copy)Abstract
We report on a room temperature detector which allows to determine and monitor the state of polarization of terahertz radiation with picosecond temporal resolution. The detector is based on the circular photogalvanic effect recently observed in GaAs/AlGaAs quantum wells. The circular photogalvanic effect yields in response to elliptically polarized radiation a current signal proportional to the degree of circular polarization. The peak current signal occurs in unbiased samples for circular polarization, vanishes at linear polarization and changes sign by switching the helicity from right-handed to left-handed. The detector consists of a (113)A MBE grown p-GaAs/AlGaAs multiple quantum well structure. The response has been measured in the wavelength range between 76 mum and 280 mum at normal incidence of the radiation on the sample.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM-WELLS; PHOTODETECTORS; SPIN; circular photogalvanic effect; fast infrared detection; helicity of radiation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 May 2021 10:57 |
| Last Modified: | 18 May 2021 10:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38936 |
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