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SUO Guoguo, WANG Xiangru, HUANG Ziqiang, TANG Zhenghui, DU Jing. Test method for birefringence of Fourier quarter-wave-plate[J]. LASER TECHNOLOGY, 2016, 40(1): 131-135. DOI: 10.7510/jgjs.issn.1001-3806.2016.01.029
Citation: SUO Guoguo, WANG Xiangru, HUANG Ziqiang, TANG Zhenghui, DU Jing. Test method for birefringence of Fourier quarter-wave-plate[J]. LASER TECHNOLOGY, 2016, 40(1): 131-135. DOI: 10.7510/jgjs.issn.1001-3806.2016.01.029
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Test method for birefringence of Fourier quarter-wave-plate

  • 1.

    Reseach Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China;

  • 2.

    School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China

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  • Received Date: October 27, 2014
  • Revised Date: November 04, 2014
  • Published Date: January 24, 2016
    Graphical Abstract
    • Abstract
  • In order to measure the phase modulation of liquid crystal optical phased arrays(LCOPA) automatically with high resolution and high precision, Fourier quarter-wave-plate (FQW) method was adopted. On the basis of the conventional /4 wave-plate method, combined with the discrete Fourier transform algorithm to process data, higher accuracy was attained in spite of the influence of vibration and noise in surroundings. In the experiments, automatic test was accomplished with a computer controlling the stepping motor combing accessory devices such as CCD and FQW. The results showed that the repetitive test precision was less than 0.3 taking a standard /4 wave-plate as a test sample. The near-field phase distribution for a LCOPA developed by ourselves was obtained and its phase cycle and phase valley between the electrodes was observed.
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    • References (11)
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