shen feng, jiang wen-han. The signal transferring characteristics of ICCD WFS and its measurement error[J]. High Power Laser and Particle Beams, 2001, 13.
Citation:
shen feng, jiang wen-han. The signal transferring characteristics of ICCD WFS and its measurement error[J]. High Power Laser and Particle Beams, 2001, 13.
shen feng, jiang wen-han. The signal transferring characteristics of ICCD WFS and its measurement error[J]. High Power Laser and Particle Beams, 2001, 13.
Citation:
shen feng, jiang wen-han. The signal transferring characteristics of ICCD WFS and its measurement error[J]. High Power Laser and Particle Beams, 2001, 13.
The Shack-Hartmann wavefront sensor is the most popular type in adaptive optics system operated with faint objects, because of its outstanding advantages in high light efficiency, simple structure. In this paper, the signal statistics of image-intensified CCD(ICCD) wavefront sensor is analysized, and a mathematical model of its measurement error is given. One kind of ICCD(C2166 type image intensifier from Hamamatsu Photonics) wavefront sensor is tested. The results show that the different pixel sampling values of ICCD are not independent statistically and the measurement signals don’t obey the characteristics of Poisson distribution. No only the photon noises and readout noises, but also the gain fluctuation noises exist in the ICCD wavefront sensor. The measurement error is dependent on
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