Title :
Generation and detection of terahertz radiation by non-resonant nonlinear process in GaAs using 1.56 μm fiber laser pulses
Author :
Nagai, Masaya ; Saito, Singo ; Ohtake, Hideyuki ; Bessho, Toshiaki ; Sugiura, Toshiharu ; Hirosumi, Tomoya ; Yoshida, Makoto ; Tanaka, Koichiro
Author_Institution :
Dept. of Phys., Kyoto Univ., Japan
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We demonstrate the generation and detection of a terahertz wave by non-resonant electro-optical processes with femtosecond 1.56 μm laser pulses. Using a 0.5 mm-thick [110]-oriented GaAs wafer for optical rectification and electro-optical modulation, we achieve spectral sensitivity up to 3 THz. For high net efficiency of nonlinear process, it is important to evaluate the phase matching condition in electro-optical crystals.
Keywords :
III-V semiconductors; electro-optical modulation; gallium arsenide; high-speed optical techniques; optical phase matching; radiation detection; submillimetre wave generation; 0.5 mm; 1.56 micron; 3 THz; GaAs; electro-optical crystals; electro-optical modulation; fiber laser pulses; nonresonant electro-optical processes; nonresonant nonlinear process; optical rectification; phase matching condition; spectral sensitivity; terahertz radiation detection; terahertz radiation generation; Fiber lasers; Fiber nonlinear optics; Gallium arsenide; Lasers and electrooptics; Nonlinear optics; Optical modulation; Optical pulse generation; Optical sensors; Radiation detectors; Ultrafast optics;
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.2004.1422179
