Gamma-radiation-induced negative nonlinear absorption in quartz glass
نویسندگان
چکیده
The effect of ionizing radiation on the nonlinear optical properties materials needs to be considered for applications that employ high-power laser pulses in extreme environments. Heraeus Infrasil302 quartz glass was irradiated by gamma rays, and its absorption measured using open-aperture Z-scan technique with nanosecond pulses. Irradiation results a negative coefficient whose magnitude increases irradiation dose. Nonlinear coefficients −0.78, −1.14, −1.29, −1.88~ × ~10 −13 m/W are doses 600 krad, 1.2 Mrad, 3.6 10 respectively. Thermal annealing restores quartz-glass their unirradiated values. It is suggested metallic impurities introduced manufacturing process have role inducing saturated glass, which manifests as coefficient, demonstrated comparing equivalent measurements Spectrosil2000 quartz.
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ژورنال
عنوان ژورنال: Optical Materials Express
سال: 2022
ISSN: ['2159-3930']
DOI: https://doi.org/10.1364/ome.449877