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Proceedings Paper

Theoretical analyses for the relationship between the performance of quadrant photodetector and the size of incident light spot
Author(s): Zhaoying Zheng; Changwei Li; Sijiong Zhang
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Paper Abstract

Quadrant photodetector is one of the most popular detection devices for tip/tilt sensing. The measurement range and detection sensitivity, depending on the size of light spot incident on the quadrant photodetector, are theoretically analyzed and discussed in the application cases of the uniform irradiance distribution and of Gaussian irradiance distribution of the incident light spot. According to the theoretical results, the larger the size of the light spot is, the greater the measurement range of the quadrant photodetector, and the smaller the detection sensitivity of the quadrant photodetector.

Paper Details

Date Published: 21 July 2014
PDF: 11 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914856 (21 July 2014); doi: 10.1117/12.2055065
Show Author Affiliations
Zhaoying Zheng, Nanjing Institute of Astronomical Optics & Technology (China)
Univ. of Chinese Academy of Sciences (China)
Changwei Li, Nanjing Institute of Astronomical Optics & Technology (China)
Sijiong Zhang, Nanjing Institute of Astronomical Optics & Technology (China)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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