Open AccessRefractive index-modified structures in glass written by 266nm fs laser pulses
Author(s) -
A. Saliminia,
Jean-Philippe Bérubé,
Réal Vallée
Publication year - 2012
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.20.027410
Subject(s) - materials science , optics , zblan , femtosecond , laser , fiber bragg grating , refractive index , wavelength , phosfos , fiber laser , optoelectronics , fused quartz , fabrication , optical fiber , quartz , graded index fiber , fiber optic sensor , medicine , physics , alternative medicine , pathology , composite material
We demonstrate the inscription of embedded waveguides, anti-waveguides and Bragg gratings by use of intense femtosecond (fs) UV laser pulses at 266nm in pure fused silica, and for the first time, in bulk fused quartz and ZBLAN glasses. The magnitude of induced index changes, depends, besides pulse energy and translation speed, largely on writing depth and varies from ~10(-4) for smooth modifications to ~10(-3) for damaged structures. The obtained results are promising as they present the feasibility of fabrication of short (< 0.2μm) period first-order fiber Bragg gratings (FBGs) for applications such as in realization of all-fiber lasers operating at short wavelengths.