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Optical Engineering

Optimal frequency doubling of transferred-electron amplifier CO2 laser
Author(s): Michael M. Tilleman; Abraham Englander
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Paper Abstract

Second-harmonic generation (SHG) of CO2 lasers has been investigated since the early 1970s, resulting in the development of a number of efficient nonlinear crystals. Among the most suitable candidates for laser systems one finds are AgGaSe2, ZnGeP2, CdGeAs2, and AgGaS2. For these crystals measured conversion efficiencies of frequency doubling have reached levels of 35%, while basic principles and damage threshold of materials pose an upper limit well above that, at 50%. In the quest for optimal conversion we studied the SHG of a transferred-electron amplifier CO2 laser in an AgGaSe2 crystal, measuring a value of 20%, which is further scalable to 50%. In this paper we compare the various studies and layout the design parameters for an optimal second-harmonic generator for the 4.5- to 5.5-?m range.

Paper Details

Date Published: 1 March 2000
PDF: 5 pages
Opt. Eng. 39(3) doi: 10.1117/1.602424
Published in: Optical Engineering Volume 39, Issue 3
Show Author Affiliations
Michael M. Tilleman, BioLase Technology, Inc. (Israel)
Abraham Englander, Soreq Nuclear Research Ctr. (Israel)

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