Preparation, characterization, and micropatterning of laser-dye-doped sol-gel films
- 1 August 2002
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 17 (8) , 2095-2098
- https://doi.org/10.1557/jmr.2002.0309
Abstract
Planar thin films of dye-doped silica were prepared by sol-gel synthesis. The optical properties of the films were characterized by transmittance measurements in the visible-infrared range and by photoluminescence. Micropatterns whose feature size was on the order of 2.4 μm, were imprinted on the film surface by a simple soft lithography approach. An optical microscope interfaced to a charge-coupled device camera was used to image the imprinted patterns and to analyze the patterned films photoluminescence. A sensitive spectral narrowing of the emission, which occurred only in micropatterned films, was attributed to the lateral confinement of the luminescence due to the micrometer-scale modulation of refractive index produced by the embossing procedure.Keywords
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