Visible laser self-focusing in hybrid glass planar waveguides
- 1 August 2002
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 27 (15) , 1342-1344
- https://doi.org/10.1364/ol.27.001342
Abstract
We report that self-focusing occurs with simultaneous self-inscription of a cylindrical waveguide when 514.5-nm light from a cw argon-ion laser propagates in a solgel-derived silica methacrylate hybrid glass planar waveguide. Spatially localized free-radical polymerization of methacrylate substituents is initiated in the path of the guided wave. This causes intensity-dependent refractive-index changes that lead to self-lensing and focusing. A channel waveguide evolves in the matrix, which supports fundamental and higher-order optical modes and suppresses diffraction of the beam.Keywords
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