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7 September 2011 Thermally stable hybrid organic/inorganic resonant cavities
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Abstract
Silica optical microcavities experience linewidth broadening and resonant frequency instability as a result of their high Q factors. One of the causes is the thermo-optic effect or temperature induced changes in refractive index. For many telecommunications and biodetection applications, it is critical to have a stable, temperature independent, resonant frequency. In this research, silica microtoroid resonators are coated with two different polymers: polymethylmethacrylate (PMMA) and polystyrene (PS). The hybrid device has minimal thermal response with proper film thicknesses depending on the polymers because the positive dn/dT of silica is balanced by the negative dn/dT of the polymer. The results follow theoretical predictions based on finite element method simulations.
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Hong Seok Choi and Andrea M. Armani "Thermally stable hybrid organic/inorganic resonant cavities", Proc. SPIE 8113, Linear and Nonlinear Optics of Organic Materials XI, 811303 (7 September 2011); https://doi.org/10.1117/12.892443
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