Bidirectional phase-shifting point diffraction interferometer for wavefronts testing

Sanbin Chen; Shouhuan Zhou; Xiaojun Tang; Zhao Hong

doi:10.1117/12.2197812

8 October 2015 Bidirectional phase-shifting point diffraction interferometer for wavefronts testing

Sanbin Chen, Shouhuan Zhou, Xiaojun Tang, Zhao Hong

Proceedings Volume 9677, AOPC 2015: Optical Test, Measurement, and Equipment; 96770M (2015) https://doi.org/10.1117/12.2197812
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

The wavefront of the laser beam was tested by a point-diffraction interferometer with bidirectional phase-shifting. The phase-shifting is obtained by the bidirectional modulated of the electro-optic effect lithium niobate crystal combining with a pinhole filter in half-wave film. The wavefront aberration of incoming beam is directly measured by analyzing five frames phase-shifted interferograms captured by a CCD camera.

Citation Download Citation

Sanbin Chen, Shouhuan Zhou, Xiaojun Tang, and Zhao Hong "Bidirectional phase-shifting point diffraction interferometer for wavefronts testing", Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96770M (8 October 2015); https://doi.org/10.1117/12.2197812

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