Geometric optics-based design of laser beam shapers

David L. Shealy; Shao-Hua Chao

doi:10.1117/1.1617311

1 November 2003 Geometric optics-based design of laser beam shapers

David L. Shealy, Shao-Hua Chao

Optical Engineering, Vol. 42, Issue 11, (November 2003). https://doi.org/10.1117/1.1617311

When diffraction effects are not important, geometrical optics (ray tracing, conservation of energy within a bundle of rays, and the constant optical path length condition) can be used to design laser beam shapers by solving beam shaping equations or by optimizing a beam shaping merit function for the configurations, including aspheric elements or spherical-surface gradient-index lenses, which are required to change the input irradiance and phase profile into a more useful form. Geometrical optics-based methods are presented for shaping both rotationally and rectangular symmetric laser beam profiles. Solutions of the beam shaping equations are presented for a two-plano-aspheric lens system for shaping a circular symmetric Gaussian beam into a top-hat output beam profile and a two-mirror system with no central obscuration for shaping an elliptical Gaussian input beam into a Fermi-Dirac output beam profile.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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David L. Shealy and Shao-Hua Chao "Geometric optics-based design of laser beam shapers," Optical Engineering 42(11), (1 November 2003). https://doi.org/10.1117/1.1617311

Published: 1 November 2003

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