Ultrabroadband photoconductive detection: Comparison with free-space electro-optic sampling

Kono, Shunsuke; Tani, Masahiko; Sakai, Kiyomi
August 2001
Applied Physics Letters;8/13/2001, Vol. 79 Issue 7
Academic Journal
The spectral response of a low-temperature-grown GaAs photoconductive (PC) antenna is compared with that of the electro-optic sampling technique for the frequency region up to 40 THz. The spectral response of the PC antenna for broadband detection is found to be determined by the temporal profile of the number of photocarriers injected by ultrashort optical gate pulses. © 2001 American Institute of Physics.


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