Ti:sapphire laser has an important position in ultrashort pulse generation and wavelength tuning. The use of expensive frequency-doubled diode-pumped solid-state laser as the pump source limits the promotion of its application to a certain extent. With the maturity of high-power blue-green laser diodes (LDs), low-cost LD directly pumped Ti:sapphire laser becomes possible. After more than 10 years of development, the output parameters of LD pumped Ti:sapphire lasers have been greatly improved. Moreover, the lasers have been applied to optical frequency combs, multiphoton microscopy imaging, and so forth, both of which have achieved impressive results.

中文翻译：

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激光二极管泵浦钛蓝宝石激光器综述

Ti：蓝宝石激光器在超短脉冲产生和波长调谐方面具有重要地位。采用昂贵的倍频二极管泵浦固体激光器作为泵浦源在一定程度上限制了其应用的推广。随着高功率蓝绿激光二极管（LD）的成熟，低成本的LD直接泵浦钛蓝宝石激光器成为可能。经过10多年的发展，LD泵浦钛蓝宝石激光器的输出参数有了很大的提高。此外，激光已应用于光频梳、多光子显微成像等，均取得了令人瞩目的成果。