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

Paper Details

Date Published: 31 December 2019
PDF: 2 pages
Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 1120114 (31 December 2019); doi: 10.1117/12.2541985
Show Author Affiliations
Wataru Watanabe, Ritsumeikan Univ. (Japan)
Seiya Terai, Ritsumeikan Univ. (Japan)


Published in SPIE Proceedings Vol. 11201:
SPIE Micro + Nano Materials, Devices, and Applications 2019
M. Cather Simpson; Saulius Juodkazis, Editor(s)

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