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Waveguide structures for the visible and near-infrared wavelength regions in near-stoichiometric lithium niobate formed by swift argon-ion irradiation.

Authors
  • Huang, Qing
  • Liu, Peng
  • Liu, Tao
  • Zhang, Lian
  • Wang, Xue-Lin
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Feb 13, 2012
Volume
20
Issue
4
Pages
4213–4218
Identifiers
DOI: 10.1364/OE.20.004213
PMID: 22418179
Source
Medline
License
Unknown

Abstract

We report the fabrication of a waveguide structure in a near-stoichiometric lithium niobate crystal using 200-MeV argon-ion irradiation at a fluence of 2 × 10(12) ions/cm2. Guided modes were detected in the visible and near-infrared wavelength regions, suggesting that the waveguide can be used at fiber communications wavelengths. The refractive index profiles of the waveguide were reconstructed from the effective index functions. Micro-Raman spectra recorded in the waveguide layer and the substrate showed that the Li/Nb ratio was preserved in the waveguide layer after swift argon-ion irradiation.

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