Phase-type diffractive micro-optics elements in sulfur-based polymeric glass by femtosecond laser direct writing

Feng Liu, Peng Li, Sheng Liu, Chuan Jin, Bingyan Wei, Junwei Min, Zhichao Liu, Xiangping Zhu & Jianlin Zhao
Sulfur-based polymeric glasses are promising as alternative low-cost IR materials with their profoundly high IR transparency. In this Letter, femtosecond laser induced refractive index change (RIC) was investigated in one typical sulfur-based polymeric glass material, poly(S-r-DIB), for the first time, to the best of our knowledge. RIC in laser engineered region was quantitively characterized, which laid a foundation for phase-type optical element design. By integration of RIC traces, embedded phase-type micro-optics elements, including Fresnel zone...
1 citation reported since publication in 2023.
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