We report the one-step precipitation of CdS quantum dots in the volume of CdS-doped silicate glass under the focused femtosecond laser beam without additional heat treatment of glass. Femtosecond direct laser writing leads to the annular distribution of the precipitated CdS quantum dots in laser-written domain optical properties of which could be tuned by laser beam parameters. Increasing the laser pulse number to ${10}^3$ significantly enhances luminescence intensity in the domains, while further increasing up to ${10}^6$ pulses leads to luminescence quenching. A possible scenario for the formation and distribution of quantum dots is proposed.

中文翻译：

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飞秒激光直接诱导在硅酸盐玻璃内部形成CdS量子点

我们报告了在聚焦飞秒激光束作用下CdS掺杂的硅酸盐玻璃体积中CdS量子点的一步沉淀，无需对玻璃进行额外的热处理。飞秒直接激光写入导致沉淀的CdS量子点在激光写入域光学特性中的环形分布，可以通过激光束参数对其进行调整。将激光脉冲数增加到${10}^3$ 显着增强了域中的发光强度，同时进一步提高了 ${10}^6$脉冲导致发光淬灭。提出了形成和分布量子点的可能方案。