Femtosecond laser fabrication of hybrid optical element in glass: volume grating embedded inside refractive lens

Wataru Watanabe; Seiya Terai

doi:10.1117/12.2541985

31 December 2019 Femtosecond laser fabrication of hybrid optical element in glass: volume grating embedded inside refractive lens

Wataru Watanabe, Seiya Terai

Author Affiliations +

Proceedings Volume 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019; 1120114 (2019) https://doi.org/10.1117/12.2541985
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

Femtosecond laser direct writing in glass is used to fabricate micro-optical elements with hybrid optical functions. Formation of hybrid refractive-diffractive elements by femtosecond laser direct writing in glass was demonstrated. By fabricating a diffraction grating inside a refractive lens, an element with two functions of light focusing and diffraction was fabricated. Hybrid optical element of volume grating embedded inside refractive lens element with a diffraction efficiency of 89% (at 633 nm wavelength) is achieved.

Citation Download Citation

Wataru Watanabe and Seiya Terai "Femtosecond laser fabrication of hybrid optical element in glass: volume grating embedded inside refractive lens", Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 1120114 (31 December 2019); https://doi.org/10.1117/12.2541985

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