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Optical Engineering

Axicon as a retroreflector in open-path Fourier transform infrared spectrometry
Author(s): Robert L. Richardson; Peter R. Griffiths
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Paper Abstract

Ray-tracing analysis of a particular reflecting axicon, a right circular cone, for use as a retroreflector in active open-path Fourier-transform IR (OP/FT-IR) spectrometry, and the results of testing a 0.305-m aperture right circular cone using a commercial active OP/FT-IR spectrometer are presented. The ray-tracing model is based on the optical characteristics of a commercial single-telescope monostatic OP/FT-IR spectrometer and models the off-axis behavior normally encountered under practical field conditions during field use. Of practical concern are the trends for the diameter of the beam reflected from the retroreflector as a function of the path length between spectrometer and retroreflector and misalignment of the retroreflector with respect to the transmitted beam. Construction and the results of field-testing two smaller epoxy-composite axicons replicated from the 0.305-m master are presented.

Paper Details

Date Published: 1 August 2003
PDF: 5 pages
Opt. Eng. 42(8) doi: 10.1117/1.1589756
Published in: Optical Engineering Volume 42, Issue 8
Show Author Affiliations
Robert L. Richardson, Univ. of Idaho (United States)
Peter R. Griffiths, Univ. of Idaho (United States)

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