Optical and generation characteristics of new nonlinear Ba2Ga8GeS16 and Ba2Ga8(GeSe2)S-14 crystals for the mid-IR range
QUANTUM ELECTRONICS(2022)
Abstract
Ba2Ga8GeS16 and Ba2Ga8(GeSe2)S-14 single crystals of large size and good optical quality have been grown for the first time. Their linear optical characteristics-transmission spectra in the range of 0.3-25 mu m, dispersion of principal refractive indices, and birefringence-have been measured. Irradiation of the crystals by 100-fs laser pulses with a wavelength of 8.3 mu m initiated second-harmonic generation with an efficiency comparable with that obtained for the AgGaS2 crystal.
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Key words
nonlinear optical crystals, second harmonic generation
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