Coherent terahertz imaging with synchronized distributed-feedback diode lasers

Author

Friederich, F. ; Löffler, T. ; Deninger, A. ; Roggenbuck, A. ; Lison, F. ; Henneberger, R. ; Zimmermann, R. ; Spickermann, G. ; Bolívar, P. Haring ; Roskos, H.G.

Author_Institution

Phys. Inst., Johann Wolfgang Goethe-Univ., Frankfurt am Main, Germany

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

We present a heterodyne hybrid terahertz imaging system, which combines electronic narrow-band emitters, operating at 0.2 THz and 0.62 THz respectively, with a continuous-wave two-color laser system for electro-optic detection. The laser system employs two distributed-feedback laser diodes, providing a tunable difference frequency which is phase-locked to the emitted terahertz frequency with an offset of 10 MHz.

Keywords

distributed feedback lasers; electro-optical devices; semiconductor lasers; terahertz wave imaging; coherent terahertz imaging; continuous-wave two-color laser system; distributed-feedback diode lasers; electro-optic detection; tunable difference frequency; Diode lasers; Fiber lasers; Frequency; Laser beams; Laser feedback; Laser stability; Lasers and electrooptics; Optical control; Optical imaging; Phase detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5324731

Filename

5324731