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Optical Engineering

Transforming a circular laser beam into a square or trapezoid--almost
Author(s): William C. Sweatt
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Paper Abstract

An aberrated laser beam will change shape as it propagates. We use this phenomenon to transform a collimated, uniform-intensity, round beam into a square beam with rounded corners and a fairly uniform intensity. The square beam can be recollimated because no rays cross each other. We found a similar transformation that turns a circular beam into a trapezoidal shape with rounded corners. These aberrating elements can be fabricated using binary optics technology.

Paper Details

Date Published: 1 February 1992
PDF: 6 pages
Opt. Eng. 31(2) doi: 10.1117/12.56060
Published in: Optical Engineering Volume 31, Issue 2
Show Author Affiliations
William C. Sweatt, Sandia National Labs. (United States)

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