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Nanostructured Materials for Photonics

Published online by Cambridge University Press:  10 February 2011

N. D. Kumar,
G. Ruland,
M. Yoshida,
M. Lal,
J. Bhawalkar,
G. S. He and
P. N. Prasad
N. D. Kumar
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
G. Ruland
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
M. Lal
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
J. Bhawalkar
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
G. S. He
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
P. N. Prasad
Affiliation:
Photonics Research Laboratory, Department of Chemistry State University of New York at Buffalo, NY 14260-3000.
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Abstract

Nanocomposite materials for application in photonics were developed by sol-gel processing and reverse micellar microemulsion techniques. The capability of incorporating many materials with different functional properties in sol-gel processed glass matrices has been explored in making these materials. The large pore volume fraction and the enormous surface area of the sol-gel glasses enables one to introduce many materials in a phase separated fashion, where the phase separation is in the nanometer range. It is possible to introduce an active material on to the pore surface by solution infiltration and subsequent removal of the solvent, then filling the pores with a monomer containing another active material, and polymerizing inside the pores. Using this approach we have developed composite materials for optical power limiting applications at different wavelengths and a tunable solid state dye lasing medium

Optically transparent polyimide:TiO2 composite waveguide materials were prepared by the dispersion of nano-sized TiO2 particles into a polyimide matrix. The particles were produced through reverse micelles using the sol-gel method, and were incorporated into the fluorinated polyimide solution. A polyimide:TiO2 (4 wt %) composite waveguide was produced from the solution. Since the particle size is so small, no noticeable scattering loss was observed. The measured optical propagation loss at 633 nm was 1.4 dB/cm, which is equivalent to that of the pure polyimide. The refractive index was increased from 1.550 to 1.560 by the incorporation of TiO2

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996, 535
Copyright
Copyright © Materials Research Society 1996

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