Simple implementation of phase screens for repeatable seeing generation

Details Simple implementation of phase screens for repeatable seeing generation Simple implementation of phase screens for repeatable seeing generation

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490..830p&link_type=abstract

Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI

Physics

Optics

1

Scientific paper

The paper reports about some laboratory test aimed to investigate the behavior of CD-ROM cover as phase screens to introduce repeatable turbulence in laboratory optical set-up. Several kinds of devices have been studied to this purposes, however the approach described in this paper requires a very simple and low cost implementation. Briefly the characteristic of some CD-ROM covers as phase screens have been measured in lab. First the overall phase disturbance is quantified and the turbulence power as a function of the pupil size in the screen is evaluated. Then we report the statistical distribution of Zernike polynomials variance as a function of pupil dimension. Finally the temporal power spectral density for several Zernike polynomials is computed considering that the phase screens are rotated to achieve temporal evolution.

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