Upconversion fluorescence assisted visualization of femtosecond laser filaments in Er-doped chalcohalide 65GeS2-25Ga2S3-10CsCl glass

Ivan Blonskyi,Viktor Kadan,Oleh Shpotyuk,Laurent Calvez,Ihor Pavlov,Svitlana Pavlova,Andriy Dmytruk,Andriy Rybak,Petro Korenyuk

Optics & Laser Technology（2019）

引用 4|浏览28

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摘要

•Upconversion emission of Er visualizes femtosecond filaments in chalcohalide glass.•Laser-induced Δn reverses its sign depending on the excitation conditions.•Glass darkens under bulk two-photon ionization by sub-band femtosecond pulses.

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关键词

Chalcohalide glass,Femtosecond laser,Filamentation,Upconversion fluorescence,Rare-earth ion,Two-photon absorption

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