Power Spectra Analysis of the Disturbed Wavefront in Laser Beam Horizontal Atmospheric Propagation II: Wavefront Phase and Greenwood Frequency

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Journals >Acta Optica Sinica >Volume 20 >Issue 8 >Page 1035 > Article

Acta Optica Sinica
Vol. 20, Issue 8, 1035 (2000)

Power Spectra Analysis of the Disturbed Wavefront in Laser Beam Horizontal Atmospheric Propagation II: Wavefront Phase and Greenwood Frequency

[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]

Author Affiliations

[in Chinese]

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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Power Spectra Analysis of the Disturbed Wavefront in Laser Beam Horizontal Atmospheric Propagation II: Wavefront Phase and Greenwood Frequency[J]. Acta Optica Sinica, 2000, 20(8): 1035 Copy Citation Text

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Abstract

By using the Hartmann-Shack wavefront sensor of the 61 element adaptive optical system, power spectra density (PSD) of the atmosphere disturbed wavefront, both overall tilt removed and leave in, was measured and analyzed. A method of calculating the Greenwood frequency and the needed control bandwidth of the deformable mirror of an adaptive optical system from measured PSDs was discussed.

Keywords

adaptive optics atmospheric turbulence Greenwood frequency.power spectra density wavefront overall tilt