Abstract
We have observed a several times enhancement of the IR optical second harmonic generation of GeSe2–Ga2S3–PbI2 glasses for the fundamental wavelength 10.6 μm. The investigations were performed after the previously treatment of the glasses by the two coherent laser beams generating by the same laser––the first one at 10.6 μm and another ones at doubled frequency (5.3 μm) obtained like a second harmonic generation signal. We have found that the maximal optical second harmonic generation was achieved during illumination by the fundamental CO2 laser beam with power density about 1.8 GW/cm2 , temperature about 425 °C corresponding to the glassing transitions and ratio power intensity ratio between the fundamental and doubled frequency beams about 25.
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Ebothe, J., Imiolek, W., Plucinski, K.J. et al. GeSe2–Ga2S3–PbI2 as materials for IR-stimulated optical second harmonic generation. J Mater Sci: Mater Electron 19, 233–236 (2008). https://doi.org/10.1007/s10854-007-9268-7
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DOI: https://doi.org/10.1007/s10854-007-9268-7