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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 9 — Mar. 20, 1997
  • pp: 1882–1888

Efficient continuous-wave frequency doubling of a tunable CO2 laser in AgGaSe2

S. Ya. Tochitsky, V. O. Petukhov, V. A. Gorobets, V. V. Churakov, and V. N. Jakimovich  »View Author Affiliations


Applied Optics, Vol. 36, Issue 9, pp. 1882-1888 (1997)
http://dx.doi.org/10.1364/AO.36.001882


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Abstract

Second-harmonic output at 4.6–5.5 μm of the order of 6 mW with a 0.12% external conversion efficiency has been obtained by pumping a AgGaSe<sub>2</sub> crystal with a low-power cw CO<sub>2</sub> laser. The surface damage threshold of AgGaSe<sub>2</sub> for cw radiation was found to be inside the limit of 33–45 kW/cm<sup>2</sup> in the 9.2–10.8-μm wavelength region. Another important limitation of the pump power connected with a thermal lensing effect in crystal was determined experimentally. A comparison was made of AgGaSe<sub>2</sub> and ZnGeP<sub>2</sub> crystals as materials suitable for the efficient generation of the second harmonic of cw CO<sub>2</sub> laser radiation.

© 1997 Optical Society of America

Citation
S. Ya. Tochitsky, V. O. Petukhov, V. A. Gorobets, V. V. Churakov, and V. N. Jakimovich, "Efficient continuous-wave frequency doubling of a tunable CO2 laser in AgGaSe2," Appl. Opt. 36, 1882-1888 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-9-1882

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