On the applicability boundaries of the restoration method for the temporal shape of modulated optical signals with a frequency higher than the boundary frequency of a photoresistor

Nikishin, E. V.

doi:10.1134/s1063782614110220

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2018

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“…В этом случае фотоприемник измеряет интегральную энергию импульсного излучения [1 -2]. Кинетика фотопроводимости будет зависеть в основном от темпа генерации и в малой степени зависит от механизмов рекомбинации электронов и дырок [2,3].…”

Section: Introductionunclassified

Recovering the time dependence of the light intensity, the modulation frequency of which is greater than the cut-off frequency of a photodetector based on silicon with deep recombination centers.

Nikishin¹,

Baseyev²,

Piksaikina³

2018

JRE

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Abstarct. At high light intensity modulation frequencies, the photodetector measures the integral energy of the pulsed radiation. In this case, the photoconductivity kinetics depends mainly on the rate of generation of charge carriers. Mechanisms of recombination of electrons and holes have little effect on the photocurrent. The article defines the conditions under which a photoresistor can be used to reconstruct the time shape of an optical signal. The shape, frequency and intensity of the pulses vary in an arbitrary way. The method of reconstructing the shape of an optical signal is applicable if the intensity varies with frequency ω more than the inverse lifetime of

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Section: Introductionunclassified