Efficient parametric light generators with intracavity pumping by the radiation of a garnet laser with a passive shutter

Абышев А.Ф., Афонин В.И., Березин А.В., Дмитриев Д.И., Иванов А.Ф., Корепанов Н.В., Лукин А.В., Магда Л.Э., Пасункин В.Н., Рыкованов Г.Н., Сиразетдинов В.С., Стариков А.Д. Эффективные параметрические генераторы света с внутрирезонаторной накачкой излучением лазера на гранате с пассивным затвором // Оптический журнал. 2009. Т. 76. № 9. С. 19–26.

Abyshev A.F., Afonin V.I., Berezin A.V., Dmitriev D.I., Ivanov A.F., Korepanov N.V., Lukin A.V., Magda L.E., Pasunkin V.N., Rykovanov G.N., Sirazetdinov V.S., Starikov A.D. Efficient parametric light generators with intracavity pumping by the radiation of a garnet laser with a passive shutter [in Russian] // Opticheskii Zhurnal. 2009. V. 76. № 9. P. 19–26.

A.F. Abyshev, V.I. Afonin, A.V. Berezin, D.I. Dmitriev, A.F. Ivanov, N.V. Korepanov, A.V. Lukin, L.E. Magda, V.N. Pasunkin, G.N. Rykovanov, V.S. Sirazetdinov, and A.D. Starikov, "Efficient parametric light generators with intracavity pumping by the radiation of a garnet laser with a passive shutter," Journal of Optical Technology. 76 (9), 540-545 (2009). https://doi.org/10.1364/JOT.76.000540

The characteristics of parametric light generators with intracavity pumping by the radiation of a garnet laser with a passive shutter have been experimentally investigated. The conversion efficiency of laser radiation with a wavelength of λ_p =1.064 μm strongly depends on the characteristics of the phototropic shutter. When a radiation-colored LiF crystal with initial transmittance T₀ = 0.25 is used in a parametric generator based on a potassium titanyl phosphate crystal at a wavelength of λ_s =1.91 μm, a radiation energy of up to 10 mJ and a quantum efficiency of radiation conversion of H_q ≃ 0.6 are achieved. When a YAG:Cr⁴⁺ shutter with T₀ = 0.5 was used, the maximum radiation energy of the parametric generator was 5 mJ, while the conversion efficiency was H_q ≃ 0.3-0.4. In a parametric generator based on potassium titanyl arsenate crystal with λs =1.55 μm, the radiation energies corresponding to these shutters were about 7.5 and 5 mJ, while H_q ≃ 0.4-0.6 and 0.25-0.4, respectively.