Analysis of the Delay-time for Wideband SI-GaAs Photoconductive Antenna Triggered by Laser Pulse

In this paper, we reported the delay-time measurement experiments for a biased semi-insulating gallium arsenide photoconductive antenna, triggered by laser pulse, and performed at the nonlinear model. The electromagnetic wave output character dependence of the delay-time is analyzed by using the Fou...

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Bibliographic Details
Main Authors: Shi Wei, Zhang Xianbin, Zeng Jun, Ma Chengju, Su Xinwu
Format: Conference Proceeding
Language:English
Subjects:
Antenna measurements
Broadband antennas
Delay
Electromagnetic measurements
Energy states
Gallium arsenide
Laser modes
Optical pulses
Photoconductivity
Pulse measurements
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Summary:In this paper, we reported the delay-time measurement experiments for a biased semi-insulating gallium arsenide photoconductive antenna, triggered by laser pulse, and performed at the nonlinear model. The electromagnetic wave output character dependence of the delay-time is analyzed by using the Fourier transforms spectrum. The delay-time at the excited laser pulse of 532 nm and 1064 nm were measured. We observed a huge delay-time of hundreds microsecond when triggered by 1064 nm laser at the specific biased-voltage conditions. The analysis indicated the huge delay-time relate to the photogenerated carriers translation between the different energy states of EL2 deep energy level.
ISSN:2162-2027
DOI:10.1109/ICIMW.2006.368675