Fast room temperature detection of state of circular polarization of terahertz radiation

URN to cite this document:: urn:nbn:de:bvb:355-epub-21699
DOI to cite this document:: 10.5283/epub.2169

Ganichev, Sergey ; Ketterl, H. ; Prettl, Wilhelm

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Date of publication of this fulltext: 05 Aug 2009 13:37

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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 ...