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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 15 — Aug. 1, 2012
  • pp: 3135–3137

High-quality generation of a multispot pattern using a spatial light modulator with adaptive feedback

Naoya Matsumoto, Takashi Inoue, Taro Ando, Yu Takiguchi, Yoshiyuki Ohtake, and Haruyoshi Toyoda  »View Author Affiliations


Optics Letters, Vol. 37, Issue 15, pp. 3135-3137 (2012)
http://dx.doi.org/10.1364/OL.37.003135


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Abstract

We propose and demonstrate high-quality generation of a uniform multispot pattern (MSP) by using a spatial light modulator with adaptive feedback. The method iteratively updates a computer generated hologram (CGH) using correction coefficients to improve the intensity distribution of the generated MSP in the optical system. Thanks to a simple method of determining the correction coefficients, the computational cost for optimizing the CGH is low, while maintaining high uniformity of the generated MSP. We demonstrate the generation of a 28×28 square-aligned MSP with high uniformity. Additionally, the proposed method could generate an MSP with a gradually varying intensity profile, as well as a uniform MSP consisting of more than 1000 spots arranged in an arbitrary pattern.

© 2012 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(100.5090) Image processing : Phase-only filters
(140.3300) Lasers and laser optics : Laser beam shaping
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 27, 2012
Revised Manuscript: June 15, 2012
Manuscript Accepted: June 17, 2012
Published: July 23, 2012

Citation
Naoya Matsumoto, Takashi Inoue, Taro Ando, Yu Takiguchi, Yoshiyuki Ohtake, and Haruyoshi Toyoda, "High-quality generation of a multispot pattern using a spatial light modulator with adaptive feedback," Opt. Lett. 37, 3135-3137 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-15-3135


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