Time-delay-induced mean-square error in adaptive optics.

Details Time-delay-induced mean-square error in adaptive optics. Time-delay-induced mean-square error in adaptive optics.

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990josaa...7.1224f&link_type=abstract

Journal of the Optical Society of America A, Vol. 7, No. 7, p. 1224 - 1227

Physics

Optics

10

Adaptive Optics, Earth Atmosphere: Fluctuations

Scientific paper

For atmospheric turbulence-induced wave-front distortion, the mean-square change in the measured wave-front distortion for two measurements made at times separated by an interval Δt is shown to be equal to (Δt/τG)5/3, where τG is called the Greenwood time constant. It is shown that τG is related to the Greenwood frequency fG by the equation τGfG = 0.134.

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