Title :
New detection scheme for THz radiation - photon momentum detector
Author :
Willer, Ulrike ; Pohlkoetter, Andreas ; Schade, Wolfgang ; Tredicucci, Alessandro
Author_Institution :
Inst. fur Phys. und Phys. Technol., Tech. Univ. Clausthal, Clausthal-Zellerfeld
Abstract :
The radiation of a quantum cascade laser (QCL) at 2.8 THz is detected using the transmitted photon momentum to drive a quartz tuning fork. The radiation is modulated and focused onto the side of one prong giving rise to a driven oscillation of the tuning fork which is measured using the generated piezo current.
Keywords :
laser tuning; laser variables measurement; optical modulation; photodetectors; quantum cascade lasers; quartz; submillimetre wave detectors; submillimetre wave lasers; QCL laser; THz radiation detection; frequency 2.8 THz; generated piezo current; modulated radiation; quantum cascade laser radiation; transmitted photon momentum detector; tuning fork driven oscillation measurement; Bolometers; Infrared detectors; Laser tuning; Optical tuning; Photonics; Quantum cascade lasers; Radiation detectors; Resonance; Resonant frequency; Vibrations; (040.2235) Detectors: Far infrared or terahertz; (230.0040) Detectors;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
