Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10633651 | Optical Materials | 2005 | 6 Pages |
Abstract
Samples with the structure of asymmetric planar waveguides are fabricated by implanting Si+ ions with energy of 400Â keV and doses from 3 to 6Â ÃÂ 1017Â cmâ2 into synthetic silica slabs. Broad photoluminescence spectrum is observed when collecting photoluminescence (PL) signal in the direction perpendicular to the plane of waveguides while PL collected from the edge of the sample reveals narrow (FWHM of 10-20Â nm) polarization-resolved transverse electric (TE) and transverse magnetic (TM) peaks. This peculiar observation is explained using a theoretical model, developed within the framework of wave optics. The TE and TM modes are identified as radiative leaky modes of the planar waveguide. Conditions under which the narrow modes can be seen in the edge PL spectra are described.
Related Topics
Physical Sciences and Engineering
Materials Science
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Authors
T. Ostatnický, J. Valenta, I. Pelant, K. Luterová, R.G. Elliman, S. Cheylan, B. Hönerlage,