Physics – Optics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1218..194j&link_type=abstract
IN: Free-space laser communication technologies II; Proceedings of the Meeting, Los Angeles, CA, Jan. 15-17, 1990 (A91-22776 08-
Physics
Optics
Backscattering, Light Scattering, Optical Communication, Retroreflection, Space Communication, Satellite Antennas, Telecommunication, Transmitter Receivers
Scientific paper
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.
Hoeller Frank Stefan
Juranek Hans Joachim
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