Fabrication of Fresnel zone plate in chalcogenide glass and fiber end with femtosecond laser direct writing

Weijie Zhou,Rao Li,Qianyu Qi,Yitao Yang,Xunsi Wang,Shixun Dai,Baoan Song,Tiefeng Xu,Peiqing Zhang

Infrared Physics & Technology（2022）

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摘要

•High quality Ge-As-S glass and low loss fibers were prepared.•FZP working in visible and near infrared bands was fabricated on Ge-As-S glasses surface by laser direct writing.•With a well-designed FZP on the fiber end face, ChG fiber can achieve excellent self-focusing effect without the collimating and focusing lens.

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关键词

Femtosecond laser direct writing,Fresnel zone plate,Chalcogenide glass,Chalcogenide glass fiber

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