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Proceedings Paper

Measurement of spot dancing for focused beam in atmosphere using position sensitive photomultiplier tube
Author(s): Xiaoshan Ma; Wenyue Zhu; Ruizhong Rao
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Paper Abstract

The spot dancing of the focused laser beam in the turbulent atmosphere was studied using a two dimensional position sensitive photomultiplier tube (PSPMT). The centroid position of the laser spot was evaluated by means of current-dividing center-of-gravity detection. The system has advantage over detector array system in spatial resolution and over the imaging system in dynamic range and sampling rate. Laser propagation experiments were carried out over 1000m path above the sea level and the fluctuations of laser intensity were measured simultaneously. The frequency spectra were calculated by fast Fourier tansform and the standard deviation of the spot dancing were analyzed.

Paper Details

Date Published: 12 May 2005
PDF: 8 pages
Proc. SPIE 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies, (12 May 2005); doi: 10.1117/12.619508
Show Author Affiliations
Xiaoshan Ma, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Wenyue Zhu, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Ruizhong Rao, Anhui Institute of Optics and Fine Mechanics, CAS (China)


Published in SPIE Proceedings Vol. 5832:
Optical Technologies for Atmospheric, Ocean, and Environmental Studies
Daren Lu; Gennadii G. Matvienko, Editor(s)

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