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Applied Optics

Applied 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)

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Second-harmonic output at 4.6–5.5 µm of the order of 6 m W with a 0.12% external conversion efficiency has been obtained by pumping a AgGaSe2 crystal with a low-power cw CO2 laser. The surface damage threshold of AgGaSe2 for cw radiation was found to be inside the limit of 33–45 kW/cm2 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 AgGaSe2 and ZnGeP2 crystals as materials suitable for the efficient generation of the second harmonic of cw CO2 laser radiation.

© 1997 Optical Society of America

Original Manuscript: January 2, 1996
Revised Manuscript: June 20, 1996
Published: March 20, 1997

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)

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