Large refractive index change in silicone-based and non-silicone-based hydrogel polymers induced by femtosecond laser micro-machining | Zendy

Li Ding | Zendy; Richard I. Blackwell | Zendy; Jay F. Künzler | Zendy; Wayne H. Knox | Zendy

Open Access

Large refractive index change in silicone-based and non-silicone-based hydrogel polymers induced by femtosecond laser micro-machining

Author(s) -

Li Ding,

Richard I. Blackwell,

Jay F. Künzler,

Wayne H. Knox

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.011901

Subject(s) - materials science , femtosecond , refractive index , silicone , laser , optics , machining , sapphire , diffraction efficiency , polymer , optoelectronics , diffraction , composite material , grating , physics , metallurgy

A Ti:Sapphire femtosecond laser with a pulse energy of 1.3 nJ at a 93 MHz repetition rate has been used to micro-machine optical gratings inside several silicone-based and non-silicone-based hydrogel polymers. By measuring the diffraction efficiency of the gratings at 632.8 nm, we find as large as 0.06+/- 0.005 average refractive index change within the irradiated area.

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