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

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

805

Lastpage

806

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICIMW.2004.1422339

Filename

1422339