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  • Received: Oct. 22, 2018

    Accepted: Apr. 12, 2019

    Posted: Jul. 9, 2019

    Published Online: Jul. 9, 2019

    The Author Email: Dean Liu (liudean@siom.ac.cn)

    DOI: 10.3788/COL201917.070901

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    Pan Zhang, Dean Liu, Aihua Yang, Jianqiang Zhu. Optimization of compensation for high spatial frequency in distorted wavefront using optical phase conjugation[J]. Chinese Optics Letters, 2019, 17(7): 070901

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Chinese Optics Letters, Vol. 17, Issue 7, 070901 (2019)

Optimization of compensation for high spatial frequency in distorted wavefront using optical phase conjugation

Pan Zhang1,2, Dean Liu1,*, Aihua Yang1,2, and Jianqiang Zhu1

Author Affiliations

  • 1Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

A method is proposed to optimize the recording structure of the photorefractive volume grating to compensate high spatial frequency in the distorted wavefront by optical phase conjugation. Based on the coupled-wave equation, the diffraction efficiency of the recorded grating formed by the scattered beams in different recording structures is simulated. The theoretical results show that the recorded modulations with high spatial frequency can be significantly improved in the small recording angle. In the experiment, three recording structures with the recording angles of 7.5°, 30°, and 45° are chosen to verify the compensation effect. Compared with the reconstructed image in the large recording angle of 45°, the signal to noise ratio of the image recorded at 7.5° increases to 3.2 times of that at 45°.

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