LASER OUTPUT COUPLERS

Numerical and experimental study of stable resonators with diffractive output coupling

[+] Author Affiliations
Alejandro L. Peuriot

Centro de Investigaciones en La´seres y Aplicaciones (CITEFA-CONICET), Juan Bautista de Lasalle 4397 (1603), Villa Martelli, Buenos Aires, Argentina E-mail: apeuriot@citefa.gov.ar

Guillermo D. Santiago

Universidad de Buenos Aires, Laboratorio La´ser, Facultad de Ingenieri´a, Paseo Colo´n 850 (1063), Ciudad de Buenos Aires, Argentina

Carlos A. Rosito

Centro de Investigaciones en La´seres y Aplicaciones (CITEFA-CONICET), Juan Bautista de Lasalle 4397 (1603), Villa Martelli, Buenos Aires, Argentina

Universidad de Buenos Aires, Laboratorio La´ser, Facultad de Ingenieri´a, Paseo Colo´n 850 (1063), Ciudad de Buenos Aires, Argentina

Opt. Eng. 41(8), 1903-1907 (Aug 01, 2002). doi:10.1117/1.1487851
History: Received May 18, 2001; Revised Feb. 4, 2002; Accepted Feb. 4, 2002; Online August 01, 2002
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We present a characterization of the dot-mirror output coupler in the case of low losses. The numerical procedure computes the eigenvalue and field distribution through the Fox-Li method applied to a bare laser cavity. The field associated with the lowest-order mode closely follows the Airy pattern. This fact allows estimating the effective reflectivity and the beam diameter in a simple way. The computed values are compared with the experimental data obtained in a transversely-excited-atmosphere CO2 laser. The measured reflectivity approximates the expected figure for the lowest-order mode and thus suggests that this cavity discriminates against the higher-order modes. © 2002 Society of Photo-Optical Instrumentation Engineers.

© 2002 Society of Photo-Optical Instrumentation Engineers

Citation

Alejandro L. Peuriot ; Guillermo D. Santiago and Carlos A. Rosito
"Numerical and experimental study of stable resonators with diffractive output coupling", Opt. Eng. 41(8), 1903-1907 (Aug 01, 2002). ; http://dx.doi.org/10.1117/1.1487851


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