Features of TV-Imaging with Limited Photon Flux

<p>The purpose is to prove theoretically the possibility of recording images with a strong discrete character of registering photons and demonstrate the possibility of registering such images of television receivers.</p><p>A method of images simulation and correlation comparison sh...

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Bibliographic Details
Main Author: S. A. Kaznacheev
Format: Article
Language:Russian
Published: MGTU im. N.È. Baumana 2014-01-01
Series:Nauka i Obrazovanie
Subjects:
Online Access:http://technomag.edu.ru/jour/article/view/629
Description
Summary:<p>The purpose is to prove theoretically the possibility of recording images with a strong discrete character of registering photons and demonstrate the possibility of registering such images of television receivers.</p><p>A method of images simulation and correlation comparison shows the character of reducing the information content of single photon images for which each element (pixel) of idealized photosensitive matrix registers single photon fluxes.</p><p>Calculation based on the characteristics of serial samples CCDs with internal electronic multiplication (Electron Multiplying CCD, EMCCD) has been performed to show that such CCD in certain operating modes can record images formed by single photoelectrons, registered in pixels of matrix for the time of exposure. The calculation was performed taking into consideration all the basic and specific noises of a receiver type inherent. It is shown that the used value of the signal-to-noise ratio approaches to the theoretical limit imposed by photon noise, when the photon flux is in compliance with the single photon images record. On the basis of the selected type of EMCCD receiver a TV  device has been designed and created thus enabling a record of images at ultra-low light levels of the order of 10-4 lx.</p><p>In measurements a technique for creating the controlled low photon fluxes based on the application of the blackbody model as a radiant is used.</p><p>Experimentally obtained values of signal to noise ratio correspond to the theoretically calculated values in the realized operation mode.</p><p>Conclusions are drawn concerning the application prospects of CCDs with internal electron multiplication in developing the TV devices to run under low light conditions of 10-4 - 10-2 and to receive single photon images.</p>
ISSN:1994-0408