26 March 2002 Phase matching and optical properties of LiInS2 nonlinear crystal
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Proceedings Volume 4747, International Conference on Atomic and Molecular Pulsed Lasers IV; (2002) https://doi.org/10.1117/12.460151
Event: International Conference on Atomic and Molecular Pulsed Lasers IV, 2001, Tomsk, Russian Federation
Abstract
Results on investigation of linear and non-linear optical properties, damage threshold and potential efficiencies of biaxial LiInS2 crystal are represented. Transmission range is 0.4 - 12.5 micrometers at the 0.1 level and 0.5 - 11.0 micrometers at the 0.5 level. Typical absorption coefficients are as low as 0,1 - 0,25 cm-1 at the maximum transmission range 1.0 - 8.0 micrometers and 1.1 - 2.3 cm-1 at the CO2 laser wavelengths. Coefficients of second order non-linear susceptibilities are d31 equals 6.2, d32 equals 5.4 and d33 equals 9.8 pm/V, but damage threshold is as high as 120 - 130 MW/sm2 for 36 ns pulses at 9.55 micrometers . The phase-matching is estimated with using of determined Sellmeier coefficients. It is represented in graphic form so as fields of SHG efficiencies. It is shown that LiInS2 can be used in middle IR OPO pumped by Cu-vapor laser, group-velocity phase matching take place in wide spectral range for sum- and difference-frequency generation of visible, near and middle IR lasers including SHG of 3 micrometers Er laser.
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Yuri M. Andreev, Pavel P. Geiko, Lilya G. Geiko, Sergey G. Grechin, "Phase matching and optical properties of LiInS2 nonlinear crystal", Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); doi: 10.1117/12.460151; https://doi.org/10.1117/12.460151
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