Open AccessFourier analysis of spectral characteristics of a matrix photodetector in the frequency and time domain
Author(s) -
S. I. Zienko,
В. Л. Жбанова
Publication year - 2021
Publication title -
prikladnaâ fizika
Language(s) - English
Resource type - Journals
ISSN - 1996-0948
DOI - 10.51368/1996-0948-2021-3-39-46
Subject(s) - photodetector , impulse response , fourier transform , detector , optics , time domain , broadband , frequency domain , physics , spectral line , gaussian , materials science , mathematical analysis , mathematics , computer science , quantum mechanics , computer vision
The purpose of this paper is to research the frequency and time characteristics of the photo-detector using the direct and inverse Fourier transform. The spectral characteristics of the matrix photodetector were selected as the object of research. For the channels of the trans-ducer it was found that the frequency spectrum consists of two elementary bands in the form of Gaussian curves. It was revealed that the spectra have super-broadband properties. The impulse (time) characteristic of the spectra is described by the equation in an analytical form, which is in good agreement with the calculation. The rise time of the transient response is 1.8–2.9 fs. The process of absorption of light is significantly influenced by dielectric relaxa-tion of the charge. The results obtained provide important information on the properties of the photodetector in the frequency and time domain.