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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 1 — Jan. 1, 2009
  • pp: 34–36

Mode purities of Laguerre–Gaussian beams generated via complex-amplitude modulation using phase-only spatial light modulators

Taro Ando, Yoshiyuki Ohtake, Naoya Matsumoto, Takashi Inoue, and Norihiro Fukuchi  »View Author Affiliations


Optics Letters, Vol. 34, Issue 1, pp. 34-36 (2009)
http://dx.doi.org/10.1364/OL.34.000034


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Abstract

We investigate output mode purities of Laguerre–Gaussian (LG) beams generated from four typical simultaneous amplitude and phase modulation methods with phase-only spatial light modulators (SLMs). Numerical simulations supposing the practical SLM, i.e., stepwise phase modulation with a pixelated device, predict an output mode purity of beyond 0.969 for the LG beams of less than radially and azimuthally fifth order. Experimental results of generating LG beams are also shown to demonstrate the effects of the simultaneous phase and amplitude modulation.

© 2008 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(090.2890) Holography : Holographic optical elements
(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:
Holography

History
Original Manuscript: September 23, 2008
Revised Manuscript: October 29, 2008
Manuscript Accepted: November 13, 2008
Published: December 23, 2008

Citation
Taro Ando, Yoshiyuki Ohtake, Naoya Matsumoto, Takashi Inoue, and Norihiro Fukuchi, "Mode purities of Laguerre–Gaussian beams generated via complex-amplitude modulation using phase-only spatial light modulators," Opt. Lett. 34, 34-36 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-1-34


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