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Proceedings Paper

Construction and characterization of a CO2 axicon-based Bessel-Gauss resonator
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Paper Abstract

We report the generation of Bessel-Gauss beams using a CO2 laser resonator. The cavity is composed by a plane output mirror and a total reflective axicon, this configuration had been studied previously by Gutierrez-Vega et al [J.Opt.Soc.Am.A 20, 2113-22 (2003)]. Bessel-Gauss beams are produced directly from the cavity. The use of a reflective axicon instead of a refractive one results in reduction of surface-induced aberrations, minimizing absorption and increasing the non-diffracting distance. This results in a higher power non-diffracting laser beam with potential scientific and industrial applications. In order to characterize the resonator, we have obtained its output transverse intensity distribution. Additionally, we have numerically and experimentally studied the effects of mirror tilt on the output transverse mode structure. We have made numerical simulations of the misaligned resonator modes based on Bowers’s method [Appl. Opt. 31, 1185-98 (1992)]. Direct comparison of numerical and experimental results allow us to estimate the diffractive losses of the modes on the misaligned cavity and their dependence on the aligned bare cavity eigenmodes, thus providing valuable information of the output power dependence on mirror misalignment. Relevant experimental parameters and numerical procedure are fully described.

Paper Details

Date Published: 12 April 2005
PDF: 9 pages
Proc. SPIE 5708, Laser Resonators and Beam Control VIII, (12 April 2005); doi: 10.1117/12.589652
Show Author Affiliations
Martha B. Alvarez-Elizondo, Tecnologico de Monterrey (Mexico)
Manuel Guizar-Sicairos, Tecnologico de Monterrey (Mexico)
Rodolfo Rodriguez-Masegosa, Tecnologico de Monterrey (Mexico)
Julio Cesar Gutierrez-Vega, Tecnologico de Monterrey (Mexico)

Published in SPIE Proceedings Vol. 5708:
Laser Resonators and Beam Control VIII
Alexis V. Kudryashov; Alan H. Paxton, Editor(s)

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