Phase-type diffractive micro-optics elements in sulfur-based polymeric glass by femtosecond laser direct writing.
Opt Lett
; 48(4): 1056-1059, 2023 Feb 15.
Article
en En
| MEDLINE
| ID: mdl-36791009
ABSTRACT
Sulfur-based polymeric glasses are promising alternative low-cost IR materials due to 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. The RIC in the laser-engineered region was quantitively characterized, which laid a foundation for phase-type optical element design. By the integration of RIC traces, embedded phase-type micro-optics elements, including Fresnel zone plates, and a Dammann grating were fabricated in bulk poly(S-r-DIB) polymeric glass substrate via the femtosecond laser direct writing technique. The imaging and beam shaping performance were demoed in the near-infrared (NIR) region.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2023
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Article