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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 8, Iss. 11 — Nov. 1, 2010
  • pp: 1085–1089

Beam steering approach for high-precision spatial light modulators

Lingjiang Kong, Ying Zhu, Yan Song, and Jianyu Yang  »View Author Affiliations

Chinese Optics Letters, Vol. 8, Issue 11, pp. 1085-1089 (2010)

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Steering accuracy is limited by the quantized phase modulation values and the number of phase pixels for spatial light modulators (SLMs). Conventional methods of beam steering lack optimum precision. In this letter, a beam steering approach based on horizontally moving phase steps is proposed. Compared with the conventional methods, this novel method is able to reduce the maximum normalized steering error in SLM significantly by a factor proportional to the number of pixels. In addition, steering errors of high steering angles can be drastically reduced by a factor proportional to the product of the number of pixels and the quantized phase levels; the number of high-precision steering angles increases with the number of pixels or the quantized phase levels increasing.

© 2010 Chinese Optics Letters

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.1950) Optical devices : Diffraction gratings
(230.6120) Optical devices : Spatial light modulators

Lingjiang Kong, Ying Zhu, Yan Song, and Jianyu Yang, "Beam steering approach for high-precision spatial light modulators," Chin. Opt. Lett. 8, 1085-1089 (2010)

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