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The wavelength limit (λc) of detection in a conventional photodetector is limited to a characteristic energy (Δ) through the relationship: λc = hc/Δ, where Δ also determines the detector noise (dark current) and hence its performance such as the operating temperature. Here, we report an infrared photodetector with an extended operating range (responding beyond the standard spectral threshold) based...
In order to generate ultra-fast electrical pulses with GaAs photoconductive semiconductor switch, a novel facility will be designed and fabricated, and picosecond laser pulse will be used to trigger the PCSS. The bias voltage will be limited and the PCSS will operate in linear mode. The FWHM and rise time of the photocurrent usually are larger than that of laser pulse, and loop inductance is one of...
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