Title :
Theoretical and experimental study of high-Q resonant modes in terahertz optical systems
Author :
Jellema, Willem ; Withington, Stafford ; Trappe, Neil ; Murphy, J. Anthony ; Wild, Wolfgang
Author_Institution :
SRON Nat. Inst. for Space Res., Groningen, Netherlands
fDate :
27 Sept.-1 Oct. 2004
Abstract :
The existence of multiple reflections in terahertz optical system causes numerous problems in applications ranging from astronomical to medical instrumentation. We have performed a detailed theoretical study, using waveguide and free-space modal matching, of the high-Q modes that appear on THz optical paths. Highly accurate measurements at 0.48 THz reproduce in detail the complex behaviour that was predicted theoretically. This work opens up the possibility of designing schemes for removing these troublesome effects.
Keywords :
horn antennas; submillimetre wave antennas; submillimetre wave measurement; submillimetre wave receivers; waveguide theory; 0.48 THz; astronomical instrumentation; free space modal matching; high Q-resonant modes; medical instrumentation; terahertz optical systems; waveguide matching; Apertures; Biomedical optical imaging; Extraterrestrial measurements; Optical mixing; Optical receivers; Optical reflection; Optical scattering; Optical waveguides; Resonance; Transmission line matrix methods;
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.2004.1422339
