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Chin. Phys. B, 2016, Vol. 25(7): 070701    DOI: 10.1088/1674-1056/25/7/070701
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Wavefront sensing based on phase contrast theory and coherent optical processing

Lei Huang(黄磊), Qi Bian(边琪), Chenlu Zhou(周晨露), Tenghao Li(李腾浩), Mali Gong(巩马理)
Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
Abstract  A novel wavefront sensing method based on phase contrast theory and coherent optical processing is proposed. The wavefront gradient field in the object plane is modulated into intensity distribution in a gang of patterns, making high-density detection available. By applying the method, we have also designed a wavefront sensor. It consists of a classical coherent optical processing system, a CCD detector array, two pieces of orthogonal composite sinusoidal gratings, and a mechanical structure that can perform real-time linear positioning. The simulation results prove and demonstrate the validity of the method and the sensor in high-precision measurement of the wavefront gradient field.
Keywords:  wavefront gradients      composite sinusoidal gratings      phase contrast  
Received:  21 October 2015      Revised:  06 April 2016      Published:  05 July 2016
PACS:  07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)  
Corresponding Authors:  Qi Bian     E-mail:  bemyselfbq@163.com

Cite this article: 

Lei Huang(黄磊), Qi Bian(边琪), Chenlu Zhou(周晨露), Tenghao Li(李腾浩), Mali Gong(巩马理) Wavefront sensing based on phase contrast theory and coherent optical processing 2016 Chin. Phys. B 25 070701

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