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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 25 — Dec. 10, 2007
  • pp: 17032–17037

Modeling focusing characteristics of low F-number diffractive optical elements with continuous relief fabricated by laser direct writing

Mingguang Shan and Jiubin Tan  »View Author Affiliations

Optics Express, Vol. 15, Issue 25, pp. 17032-17037 (2007)

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A theoretical model is established using Rayleigh-Sommerfeld diffraction theory to describe the diffraction focusing characteristics of low F-number diffractive optical elements with continuous relief fabricated by laser direct writing, and continuous-relief diffractive optical elements with a design wavelength of 441.6nm and a F-number of F/4 are fabricated and measured to verify the validity of the diffraction focusing model. The measurements made indicate that the spot size is 1.75µm and the diffraction efficiency is 70.7% at the design wavelength, which coincide well with the theoretical results: a spot size of 1.66µm and a diffraction efficiency of 71.2%.

© 2007 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(220.4000) Optical design and fabrication : Microstructure fabrication
(260.1960) Physical optics : Diffraction theory

ToC Category:
Diffraction and Gratings

Original Manuscript: September 28, 2007
Revised Manuscript: November 13, 2007
Manuscript Accepted: November 23, 2007
Published: December 5, 2007

Mingguang Shan and Jiubin Tan, "Modeling focusing characteristics of low Fnumber diffractive optical elements with continuous relief fabricated by laser direct writing," Opt. Express 15, 17032-17037 (2007)

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