Journal
SCIENCE
Volume 287, Issue 5452, Pages 465-467Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.287.5452.465
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Mesostructured silica waveguide arrays were fabricated with a combination of acidic set-gel block copolymer templating chemistry and soft Lithography. Waveguiding was enabled by the use of a Low-refractive index (1.15) mesoporous silica thin film support. When the mesostructure was doped with the laser dye rhodamine 6G, amplified spontaneous emission was observed with a Low pumping threshold of 10 kilowatts per square centimeter, attributed to the mesostructure's ability to prevent aggregation of the dye molecules even at relatively high loadings within the organized high-surface area mesochannels of the waveguides. These highly processible, self-assembling mesostructured host media and claddings may have potential for the fabrication of integrated optical circuits.
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