Hybrid image tube employed as photon counter

N. A. Shakhramanyan

doi:10.1117/12.350476

22 June 1999 Hybrid image tube employed as photon counter

N. A. Shakhramanyan

Proceedings Volume 3516, 23rd International Congress on High-Speed Photography and Photonics; (1999) https://doi.org/10.1117/12.350476
Event: Twenty-Third International Congress on High-Speed Photography and Photonics, 1998, Moscow, Russian Federation

Abstract

Hybrid Image Tubes (HIT), being Image Intensifiers (II), output cathode-luminescent screen of which is replaced by periodic structure of semiconductor electron-sensitive elements (ESE), meet more and more wide application in the fields where it is necessary to receive and process weak optical images (illumination level of about 10^-6 lx). In this connection it is expedient to estimate HIT as photon counter, more precisely as photon group counter (with photons number in the group (gamma) ^-1, where (gamma) -quantum output of the used photocathode on a certain wavelength). One- electron (counting) registration mode is possible if impulse amplitude at ESE output exceeds fixed level of amplitude discrimination which cuts off measuring equipment noise together with ESE noise. This imposes strict requirements on coefficient of amplification value of element K_amp and on dispersion D of output impulses amplitudes.

Citation Download Citation

N. A. Shakhramanyan "Hybrid image tube employed as photon counter", Proc. SPIE 3516, 23rd International Congress on High-Speed Photography and Photonics, (22 June 1999); https://doi.org/10.1117/12.350476

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