Title :
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
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;
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
DOI :
10.1109/ICIMW.2009.5324731
