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Proceedings Paper

Problems of phase compensation under strong intensity and full-aperture tip-tilt correction from LGS
Author(s): Vladimir P. Lukin
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Paper Abstract

Modern aspects of adaptive optics are considered. Atmospheric turbulence induces phase distortions of an optical wave which transform into amplitude distortions in the wave cross sections. On a long path intensity fluctuations become so strong that points appear with zero intensity. In such point wave-front distortions are of a spiral structure. Singularity of this type are called wave-front dislocations. Problems of adaptive system development intended for compensation of turbulent distortions are discussed frequently. But still is not clear how the principal characteristics of an adaptive system such a minimum size of element and allowed temporal lag of correction are influenced by intensity fluctuations. Some problems, connected with the development of ground-based adaptive telescope, particularly, with equipping it with an additional optical system for laser guide star formation, are treated in the paper.

Paper Details

Date Published: 29 July 2002
PDF: 8 pages
Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484558
Show Author Affiliations
Vladimir P. Lukin, Institute of Atmospheric Optics (Russia)


Published in SPIE Proceedings Vol. 4900:
Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life
Yuri V. Chugui; Sergei N. Bagayev; Albert Weckenmann; P. Herbert Osanna, Editor(s)

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