A picosecond IR laser system with tunable wavelength, based on a gybrid CO2 laser

Агейчик А.А., Алексеев В.Н., Венглюк В.И., Громовенко В.М., Егоров М.С., Королев В.И., Малинин А.Н., Остапенко С.В., Резунков Ю.А., Сафронов А.Л., Соколова Г.А., Степанов В.В. Пикосекундная ИК лазерная система с перестраиваемой длиной волны излучения на основе гибридного СО2-лазера // Оптический журнал. 2009. Т. 76. № 9. С. 5–13.

Ageichik A.A., Alekseev V.N., Venglyuk V.I., Gromovenko V.M., Egorov M.S., Korolev V.I., Malinin A.N., Ostapenko S.V., Rezunkov Yu.A., Safronov A.L., Sokolova G.A., Stepanov V.V. A picosecond IR laser system with tunable wavelength, based on a gybrid CO2 laser [in Russian] // Opticheskii Zhurnal. 2009. V. 76. № 9. P. 5–13.

A.A. Ageichik, V.N. Alekseev, V.I. Venglyuk, V.M. Gromovenko, M.S. Egorov, V.I. Korolev, A.N. Malinin, S.V. Ostapenko, Yu.A. Rezunkov, A.L. Safronov, G.A. Sokolova, and V.V. Stepanov, "A picosecond IR laser system with tunable wavelength, based on a gybrid CO2 laser," Journal of Optical Technology. 76 (9), 529-535 (2009). https://doi.org/10.1364/JOT.76.000529

This paper describes a picosecond laser system based on a hybrid CO ₂ laser, using optically controlled semiconductor switches with a pulse width from 100 ps to 300 ns, followed by conversion of the radiation in nonlinear crystals by means of second-harmonic generation. Silver selenogallate AgGaSe₂ and zinc germanium diphosphide ZnGeP₂ are used as nonlinear crystals. Two-stage conversion of the radiation of a picosecond CO₂ laser with wavelength 9.4-10.6 μm into laser radiation with wavelengths 4.7-5.3 μm is carried out in the apparatus with an efficiency of 0.3%-0.5%, while 4.7-5.3-μm radiation is converted into 2.4-2.65-μm radiation with an efficiency of 8%. The overall conversion efficiency is 4 × 10^-4 or 0.04% for an output pulse energy up to 35 μJ.