Highly sensitive measurement method for straylight and retroreflected light

Hans Joachim Juranek; Frank Stefan Hoeller

doi:10.1117/12.18187

1 July 1990 Highly sensitive measurement method for straylight and retroreflected light

Hans Joachim Juranek, Frank Stefan Hoeller

Proceedings Volume 1218, Free-Space Laser Communication Technologies II; (1990) https://doi.org/10.1117/12.18187
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

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.

Citation Download Citation

Hans Joachim Juranek and Frank Stefan Hoeller "Highly sensitive measurement method for straylight and retroreflected light", Proc. SPIE 1218, Free-Space Laser Communication Technologies II, (1 July 1990); https://doi.org/10.1117/12.18187

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