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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6218–6231

Beam homogenizers based on chirped microlens arrays

Frank Wippermann, Uwe-D. Zeitner, Peter Dannberg, Andreas Bräuer, and Stefan Sinzinger  »View Author Affiliations

Optics Express, Vol. 15, Issue 10, pp. 6218-6231 (2007)

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Lens array arrangements are commonly used for the homogenization of highly coherent laser beams. These fly’s eye condenser configurations can be used to shape almost arbitrary input intensity distributions into a top hat. Due to the periodic structure of regular arrays the output intensity distribution is modulated by equidistant sharp intensity peaks which are disturbing the homogeneity. As a new approach we apply chirped microlens arrays to the beam shaping system. These are non-regular arrays consisting of individually shaped lenses defined by a parametric description which can be derived completely from analytical functions. The advantages of the new concept and design rules are presented.

© 2007 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(030.6140) Coherence and statistical optics : Speckle
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(140.3300) Lasers and laser optics : Laser beam shaping
(220.4830) Optical design and fabrication : Systems design

ToC Category:
Optical Design and Fabrication

Original Manuscript: March 21, 2007
Revised Manuscript: May 3, 2007
Manuscript Accepted: May 3, 2007
Published: May 4, 2007

Frank Wippermann, Uwe-D. Zeitner, Peter Dannberg, Andreas Bräuer, and Stefan Sinzinger, "Beam homogenizers based on chirped microlens arrays," Opt. Express 15, 6218-6231 (2007)

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