Atmospheric structure function measurements with a Shack-Hartmann wave-front sensor

Details Atmospheric structure function measurements with a Shack-Hartmann wave-front sensor Atmospheric structure function measurements with a Shack-Hartmann wave-front sensor

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992optl...17.1737d&link_type=abstract

Optics Letters (ISSN 0146-9592), vol. 17, no. 24, p. 1737-1739.

Physics

Optics

32

Atmospheric Turbulence, Telescopes, Transfer Functions, Turbulence Meters, Wave Fronts, Aberration, Atmospheric Correction, Kolmogoroff Theory, Sensors

Scientific paper

The phase structure function has been used as a convenient way to characterize aberrations introduced on optical propagation by the atmosphere. It forms the theoretical basis for the calculation of such things as the long- and short-exposure atmospheric transfer function. The structure function is difficult to measure directly and is usually assumed to follow Kolmogorov statistics. We present here a technique for direct measurement of the structure function through the use of a Shack-Hartmann wave-front sensor. Experiments confirm that the atmosphere behaves according to Kolmogorov theory most of the time. However, some instances of non-Kolmogorov behavior have been noted.

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