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Proceedings Paper

Highly sensitive measurement method for straylight and retroreflected light
Author(s): Hans Joachim Juranek; Frank Stefan Hoeller
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Paper Abstract

The basic principle and implementation of a near-field technique developed at ESTEC for measuring stray and backscattered light in optical telescopes are summarized. The measurement problems posed by transmit-receive antenna telescopes for optical intersatellite communication systems are described; the inadequacies of conventional methods for ground-based testing of such telescopes are explained; and the theoretical basis, instrumentation, and calibration of the present method are discussed. In this approach, a 40-nsec-pulsed laser-diode source is employed, and the intensity of the backscattered and stray light is measured by a microchannel-plate photomultiplier during the time of flight of the pulse from the optics assembly to a light trap.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1218, Free-Space Laser Communication Technologies II, (1 July 1990); doi: 10.1117/12.18187
Show Author Affiliations
Hans Joachim Juranek, Carl Zeiss (Germany)
Frank Stefan Hoeller, Carl Zeiss (Germany)

Published in SPIE Proceedings Vol. 1218:
Free-Space Laser Communication Technologies II
David L. Begley; Bernard D. Seery, Editor(s)

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