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Optical Engineering

Design and tolerance analysis of an axial gradient-index singlet broadband laser collimator
Author(s): Peter McCarthy; Duncan T. Moore
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Paper Abstract

A laser collimator is a narrow-field imaging system that is designed for near-diffraction-limited performance when operating at a single wavelength. Although a traditional design might consist of a homogeneous doublet, the design of an axial gradient-index (GRIN) singlet for such an application is described. The analysis begins with third-order aberration thin lens optical design principles in order to examine the effects of spherochromatism from the GRIN. The final design is optimized in CODE V® using GRIN aluminum oxynitride (ALON®), which allows for diffraction-limited operation from the visible through 5 μm. A tolerance analysis is performed on the slope, nonlinearity, and tilt of the GRIN profile in order to assess sensitivity to fabrication errors.

Paper Details

Date Published: 8 August 2013
PDF: 8 pages
Opt. Eng. 52(11) 112110 doi: 10.1117/1.OE.52.11.112110
Published in: Optical Engineering Volume 52, Issue 11
Show Author Affiliations
Peter McCarthy, Univ. of Rochester (United States)
Duncan T. Moore, Univ. of Rochester (United States)


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