Compact and Inexpensive Continuous-Wave Sub-THz Imaging System Using a Fiber-Coupled Multimode Laser Diode

Author

Shibuya, Kyoji ; Tani, Masahiko ; Hangyo, Masanori

Author_Institution

Osaka Univ., Osaka

fYear

2006

fDate

18-22 Sept. 2006

Firstpage

428

Lastpage

428

Abstract

We propose and demonstrate a sub-THz imaging system using a continuous-wave (CW) multimode laser diode (MLD). The sub-THz generation is achieved by photomixing between simultaneously oscillating longitudinal modes of the MLD on a photoconductive antenna (PA). The use of a fiber-coupled MLD makes the system compact and inexpensive. In the system both amplitude and phase information are obtained from the signals at only appropriate two points on the delay line.

Keywords

fibre lasers; photoconducting devices; semiconductor lasers; submillimetre wave antennas; submillimetre wave diodes; submillimetre wave generation; submillimetre wave imaging; submillimetre wave lasers; MLD; continuous-wave subTHz imaging system; fiber-coupled multimode laser diode; photoconductive antenna; photomixing; terahertz generation; Delay lines; Diode lasers; Fiber lasers; Laser excitation; Laser modes; Light sources; Photoconductivity; Pixel; Rail transportation; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0400-2

Electronic_ISBN

1-4244-0400-2

Type

conf

DOI

10.1109/ICIMW.2006.368636

Filename

4222370