SPECIAL SECTION ON LASER BEAM SHAPING

Analysis and optimization on single-zone binary flat-top beam shaper

[+] Author Affiliations
Jame J. Yang

New Span Opto-Technology Incorporated, Miami, Florida

Michael R. Wang

University of Miami, Department of Electrical and Computer Engineering, Coral Gables, Florida 33124 E-mail: mwang@miami.edu

Opt. Eng. 42(11), 3106-3113 (Nov 01, 2003). doi:10.1117/1.1617310
History: Received Mar. 31, 2003; Revised Jul. 12, 2003; Accepted Aug. 1, 2003; Online October 31, 2003
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We report on the analysis and optimization of a binary phase element for shaping a Gaussian laser beam to a flat-top beam. Simulation results indicate that a single-zone binary phase plate can achieve excellent flat-top beam shaping quality similar to that achieved by using multiple zones. The degradation of flat-top beam shaping quality due to etching depth errors, deviation of illuminating wavelength from design value, and variation of input beam size can be compensated to some extent through on-axis adjustment of the flat-top beam observation plane. Experiments verify these theoretical expectations. The increased beam shaper fabrication tolerance can be greatly beneficial for low-cost prototyping and production of flat-top beam shapers. © 2003 Society of Photo-Optical Instrumentation Engineers.

© 2003 Society of Photo-Optical Instrumentation Engineers

Citation

Jame J. Yang and Michael R. Wang
"Analysis and optimization on single-zone binary flat-top beam shaper", Opt. Eng. 42(11), 3106-3113 (Nov 01, 2003). ; http://dx.doi.org/10.1117/1.1617310


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