Title :
Subnanosecond polarisation detector for infrared and terahertz radiation
Author :
Kiermaier, J. ; Weber, W. ; Danilov, S.N. ; Schuh, D. ; Gerl, Ch ; Wegscheider, W. ; Bougeard, D. ; Abstreiter, G. ; Prettl, W. ; Ganichev, S.D.
Author_Institution :
Terahertz Center, Univ. of Regensburg, Regensburg
Abstract :
We report on a room temperature detector of infrared/THz laser radiation allowing to measure the radiation polarization state with picosecond time resolution. The ellipticity of radiation is analyzed applying three photoelectric phenomena: circular photogalvanic effect, linear photogalvanic effect, and photon drag effect. Each of these effects is monitored by different detector units stacked together in one detector.
Keywords :
electromagnetic wave polarisation; infrared detectors; photoconductivity; photovoltaic effects; submillimetre wave detectors; submillimetre wave lasers; temperature measurement; circular photogalvanic effect; infrared laser radiation; linear photogalvanic effect; photoelectric phenomena; photon drag effect; subnanosecond polarisation detector; terahertz laser radiation; Biomedical optical imaging; Geometrical optics; Infrared detectors; Molecular beam epitaxial growth; Optical polarization; Optical scattering; Optical sensors; Photovoltaic effects; Pulse amplifiers; Radiation detectors; Detectors; ellipticity; helicity; infrared and terahertz radiation; quantum wells;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516422
