We demonstrate that the Joule heating of the volume Bragg grating recorded in chloride photo-thermo-refractive glass can be suppressed by bleaching the silver nanoparticles with intense ultrashort laser pulses. Measurement of the bleached grating angular selectivity showed that, at the signal wavelength at 972 nm, the spectral drift is 0.5 nm at the CW laser diode beam intensity as high as $145\mathrm{W}/{\mathrm{cm}}^2$. Thus, the bleaching of silver nanoparticles results in the improved thermal stability of transmission gratings, allowing one to employ them to control the powerful CW laser radiation.

中文翻译：

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飞秒激光漂白后氯化物光热折射玻璃中体积布拉格光栅的热稳定性

我们证明，通过用强烈的超短激光脉冲漂白银纳米粒子，可以抑制氯化物光热折射玻璃中记录的体积布拉格光栅的焦耳热。漂白光栅角选择性的测量结果表明，在972 nm的信号波长下，CW激光二极管的光束强度高达0.5 nm时，光谱漂移为0.5 nm。$145\mathrm{w\; ^}/{\mathrm{厘米}}^{\mathrm{2个}}$。因此，银纳米颗粒的漂白导致透射光栅的热稳定性得到改善，从而使人们可以使用它们来控制强大的连续波激光辐射。