Vol. 18, issue 07, article # 10
Huang J., Andreev Yu. M., Badikov V. V., Geiko P. P., Panyutin V. L., Ren D., Qu Y., Fentisova A. A., Frolov Yu. N., Hu X., Lanskii G. V., Shevyrdyaeva G. S. Generation of second harmonic of TEA CO2 lasers in CdxHg(1-x)Ga2S4. // Atmospheric and oceanic optics. 2005. V. 18. No. 07. P. 546-550.
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Abstract:
The composition of new mixed nonlinear crystals CdxHg(1-x)Ga2S4 grown at the initial mixing ratio x = 0.35, as well as the transmission spectrum, disperse properties, and coefficient of second-order nonlinear susceptibility, is determined. The damage threshold of 271 MW/cm2 for 30 ns pump pulses of the ТЕА СО2 laser is 1.7-2.0 times higher than that of ZnGeP2. For the first time, parametric frequency conversion, i.e., second harmonic generation of CO2 lasers is realized. The external SHG efficiency is threefold as high as the SHG efficiency in ZnGeP2 and equals to 0.12% in energy and 0.22% in peak power at the pump intensity amounting to 10% of the damage level intensity.
