Title :
Ultrabroadband photoconductive sampling of THz radiation with 15 fs laser pulses
Author :
Tani, Masahiko ; Kono, Shunsuke ; Sakai, Kiyomi
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Kobe, Japan
Abstract :
We report on ultrabroadband detection of THz radiation by using a low-temperature-grown (LT) GaAs photoconducting (PC) antenna gated with 15-fs laser pulses. The detected radiation frequency exceeded 20 THz. This is the highest frequency detected with PC antennas reported so far. A mode-locked Ti:sapphire laser generated 12-fs laser pulses with 75-MHz repetition rate
Keywords :
III-V semiconductors; antennas; gallium arsenide; high-speed optical techniques; laser mode locking; measurement by laser beam; photoconducting devices; submillimetre wave detectors; 15 fs; GaAs; GaAs photoconducting antenna; MHz repetition rate; THz radiation; detected radiation frequency; fs laser pulses; low-temperature-grown; mode-locked Ti:sapphire laser; ultrabroadband detection; ultrabroadband photoconductive sampling; Frequency; Laser excitation; Laser mode locking; Optical pulse generation; Optical pulses; Photoconductivity; Pump lasers; Radiation detectors; Sampling methods; Surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE
Conference_Location :
Rio Grande
Print_ISBN :
0-7803-5947-X
DOI :
10.1109/LEOS.2000.890736
