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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 15 — Jul. 20, 2009
  • pp: 12753–12766

Propagation of flat-topped multi-Gaussian beams through a double-lens system with apertures

Yanqi Gao, Baoqiang Zhu, Daizhong Liu, and Zunqi Lin  »View Author Affiliations

Optics Express, Vol. 17, Issue 15, pp. 12753-12766 (2009)

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A general model for different apertures and flat-topped laser beams based on the multi-Gaussian function is developed. The general analytical expression for the propagation of a flat-topped beam through a general double-lens system with apertures is derived using the above model. Then, the propagation characteristics of the flat-topped beam through a spatial filter are investigated by using a simplified analytical expression. Based on the Fluence beam contrast and the Fill factor, the influences of a pinhole size on the propagation of the flat-topped multi-Gaussian beam (FMGB) through the spatial filter are illustrated. An analytical expression for the propagation of the FMGB through the spatial filter with a misaligned pinhole is presented, and the influences of the pinhole offset are evaluated.

© 2009 OSA

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(070.6110) Fourier optics and signal processing : Spatial filtering
(220.1140) Optical design and fabrication : Alignment

ToC Category:
Diffraction and Gratings

Original Manuscript: March 18, 2009
Revised Manuscript: June 25, 2009
Manuscript Accepted: June 29, 2009
Published: July 13, 2009

Yanqi Gao, Baoqiang Zhu, Daizhong Liu, and Zunqi Lin, "Propagation of flat-topped multi-Gaussian beams through a double-lens system with apertures," Opt. Express 17, 12753-12766 (2009)

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