Physics – Optics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..332..396d&link_type=abstract
IN: International Conference on Advanced Technology Optical Telescopes, Tucson, AZ, March 11-13, 1982, Proceedings (A83-30976 13
Physics
Optics
Interferometry, Laser Applications, Light Beams, Phased Arrays, Pointing Control Systems, Telescopes, Acousto-Optics, Mirrors, Optical Heterodyning, Reflecting Telescopes, Wave Fronts
Scientific paper
The central problem in the design of a phased array beam expander is devising an alignment technique for pointing and phasing the subaperture telescopes. The advantages and disadvantages of the standard alignment methods are discussed briefly. The most promising candidate technique, heterodyne interferometry, is developed into an optical configuration suitable for breadboard test. The optical configuration is discussed on the basis of reduction of misalignment modes, athermal design, coherence length and polarization effects. Fabrication methods are considered. It is concluded that the optical configuration presented has the capability to meet the severe alignment requirements of a multiple telescope laser beam expander.
Cusumano Salvatore J.
DeHainaut Christopher R.
Lawrence Gareth
Mick D. E.
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