A kind of wavefront curvature sensor with diffraction grating and application

Hongbin Shen; Gang Li; Fuyu Huang; Jie Liu; Yuanbo Wang

doi:10.1117/12.837711

23 November 2009 A kind of wavefront curvature sensor with diffraction grating and application

Hongbin Shen, Gang Li, Fuyu Huang, Jie Liu, Yuanbo Wang

Proceedings Volume 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications; 75080Y (2009) https://doi.org/10.1117/12.837711
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

The basic principle of wavefront curvature sensor (WFS) is described, and the strongpoints and shortcomings of traditional schemes are analyzed. As a novel WFS, the wavefront curvature sensor comprising a diffraction grating (DGWFS), which consist a defocus grating and lens, and can measure the light intensity distribution at the two defocused spots simultaneity, has the advantage of realization easily, adjustment expediently, low cost, and so on. The DGWFS has a wide application in astronomy, measurement, laser, optical component testing etc. Its principle is analyzed. Two kinds of phase retrieval arithmetics of wavefront curvature sensor are analyzed by comparison. Besides, the latest applications of wavefront curvature sensor are generally presented. Finally a novel method for measurement on solid-state laser thermal lens utilizing DGWFS is presented.

Citation Download Citation

Hongbin Shen, Gang Li, Fuyu Huang, Jie Liu, and Yuanbo Wang "A kind of wavefront curvature sensor with diffraction grating and application", Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080Y (23 November 2009); https://doi.org/10.1117/12.837711

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KEYWORDS

Wavefront sensors

Wavefronts

Sensors

Diffraction gratings

Adaptive optics

Charge-coupled devices

Mirrors

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