Discrete phase calculation of computer generated hologram for off-axis aspheric surface test

li shijie; chen qiang; wu gaofeng; li lianghong; xian linhan

Volume 23 Issue 12

Feb. 2016

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(12): 2-3

niu hong-chang, qian bao-liang. Particle simulation of compact L-band coaxial relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.

niu hong-chang, qian bao-liang. Particle simulation of compact L-band coaxial relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.

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Discrete phase calculation of computer generated hologram for off-axis aspheric surface test

1.
Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China

Publish Date: 2011-12-14

Abstract

Abstract

The phase of sample point should be calculated to design the computer generated hologram(CGH) for testing off-axis aspheric surface. The normal of the geometric center of off-axis aspheric surface was seen as the detection optical axis through shift and rotation. Then the phase distribution on off-axis aspheric surface was studied by ray tracing, and a calculation method of discrete phase was deduced, as well as the formulas for phase computation in three-dimensional coordinate system. The validity of this method is proven by calculating and comparing the phase distribution of a rotational symmetry aspheric surface. The results show that this method is correct, and the calculation accuracy can meet the requirement of CGH for off-axis aspheric surface test.
- off-axis aspheric surface,
- computer generated hologram,
- discrete phase,
- ray tracing

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