超快激光具有超快、超强和超宽频谱的特点，聚焦的超快激光可以瞬间在透明材料内部产生极高的温度和压强。在这种局域极端条件下，材料的内部结构会发生许多新奇的变化。以全无机卤化物钙钛矿纳米晶（PCN）为例，阐述了超快激光诱导玻璃内部形核和析出纳米晶的基本原理，总结了近年来利用超快激光技术在玻璃内部析出全无机PCN的研究现状，分析了其在光存储和彩色显示等领域中的应用前景。

Ultrafast laser has features of ultrafast speed, ultra-high intensity, and ultra-wide spectrum. Focused ultrafast laser can instantaneously generate extremely high temperature and pressure within transparent materials. Under such local extreme conditions, many new changes in the internal structures of the materials take place. Taking all-inorganic halide perovskite nanocrystals (PNCs) as an example, the basic principle of ultrafast laser-induced nucleation and nanocrystal precipitation in glass is expounded. Researches conducted in recent years on the precipitation of all-inorganic PNCs in glass by ultrafast laser are summarized, and the applications of this technology in the fields of optical storage and color display are analyzed.