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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2943–2945

Second-harmonic optimization of computer-generated hologram

Satoshi Hasegawa and Yoshio Hayasaki  »View Author Affiliations


Optics Letters, Vol. 36, Issue 15, pp. 2943-2945 (2011)
http://dx.doi.org/10.1364/OL.36.002943


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Abstract

A method of optimizing a computer-generated hologram based on parallel second harmonic generation is proposed for holographic femtosecond laser processing. The method, which we call second harmonic optimization, incorporates the width and spatial profile of the pulse into the hologram design. With this method, we demonstrated parallel laser processing with high quality. Because of the enhanced processing accuracy, smaller structures were processed with a smaller energy than in our previous work. In parallel laser processing with 18 beams on a glass surface, the minimum average diameter of the processed structures was 271   nm when the mean fluence of the beams was 0.88   J / cm 2 .

© 2011 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(090.2890) Holography : Holographic optical elements
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Holography

History
Original Manuscript: February 9, 2011
Revised Manuscript: June 27, 2011
Manuscript Accepted: June 29, 2011
Published: August 1, 2011

Citation
Satoshi Hasegawa and Yoshio Hayasaki, "Second-harmonic optimization of computer-generated hologram," Opt. Lett. 36, 2943-2945 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-15-2943

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