Light-pulse-induced background in image intensifiers with MCPs

Boris Efimovich Dashevsky

doi:10.1117/12.44262

Abstract

Image intensifier tubes with MCPs are nowadays increasingly employed in many fields of science and technology for the reception of alternating short light pulses of relatively large amplitudes. In the process of their operation, an additional background induced by an input light signal that has partially passed through the photocathode occurs. It can be observed on the phosphor screen in the form of dispersed scintillations uniformly distributed over the whole field of view. Studies have been carried out using an MCP-equipped intensifier of an invertor type. Characteristics of tubes fabricated using a standard and a modified technology are compared. The experimental part of the work involves photographing a bar test pattern area on the tube's screen during photocathode exposure to short light pulses as well as measurement of the modulation-transfer function. Photographs showing images of the optical test pattern and calculated modulation-transfer functions of both tube types are provided. The reported results clearly indicate that the proposed technological and structural modifications enable about a two-fold improvement of the image contrast at high frequencies.

Citation Download Citation

Boris Efimovich Dashevsky, "Light-pulse-induced background in image intensifiers with MCPs", Proc. SPIE 1449, Electron Image Tubes and Image Intensifiers II, (1 June 1991); doi: 10.1117/12.44262; https://doi.org/10.1117/12.44262

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years