Title :
Imaging techniques for a high-power THz free electron laser
Author :
Cherkassk, V.S. ; Knyazev, Boris A. ; Kubarev, V.V. ; Kulipanov, G.N. ; Kuryshev, G.L. ; Matveenko, A.N. ; Petrov, A.K. ; Popik, V.M. ; Scheglov, M.A. ; Shevchenko, O.A. ; Vinokurov, N.A.
Author_Institution :
Novosibirsk State Univ., Russia
fDate :
27 Sept.-1 Oct. 2004
Abstract :
Imaging in the terahertz spectral range is a subject of special interest for many applications. In this paper, we describe two methods for the THz imaging with a high power free electron laser. The first method is based on the transformation of THz radiation to near-infrared radiation and visualization with a thermograph. The second method is based on the record of the visible light phase shift that appears due to heating of an optically transparent, but opaque in terahertz, medium. The experiments were performed on a 100 W continuous Novosibirsk terahertz free electron laser.
Keywords :
free electron lasers; infrared imaging; submillimetre wave imaging; submillimetre wave lasers; thermo-optical devices; 100 W; continuous Novosibirsk laser; heating; high power free electron laser; near infrared radiation; near infrared visualisation; optical transparency; terahertz free electron laser; terahertz imaging; terahertz radiation transformation; terahertz spectral range; thermograph; visible light phase shift; Detectors; Electron optics; Employment; Free electron lasers; Frequency; Optical imaging; Power lasers; Temperature sensors; Visualization; Workstations;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422216
