Physics – Optics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3684..128b&link_type=abstract
Proc. SPIE Vol. 3684, p. 128-130, Laser Optics '98: Nonlinear and Coherent Optics, Vladimir E. Sherstobitov; Ed.
Physics
Optics
Scientific paper
Adaptive phasing system for large-sized composite telescope mirrors intended for transportation of high-power CO2- lasers radiation by long distances are presented. The phasing system consists of a wave-front censor and a unit for controlling drives. A heterodyne side-shift interferometer with a rotated radial diffraction grating was used as the wavefront censor. The grating can operate both in visible and IR spectral ranges. The phasing system allows to monitor and control automatically the correct form of the composite mirror in conditions of mechanical vibrations and thermal effects with the error not greater than (lambda) /40. At external perturbing factors, whose phase variations may reach 100 degree(s) to 120 degree(s)C, the (Strehl) phasing efficiency is 0.977. The phasing system can be also applied in astronomical telescopes and other systems for observation of remote objects.
Belousova Inna M.
Grigoryev Vladimir A.
Stepanov Oleg O.
Telkunov Vladislav Y.
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