Dobbs DW, Cunningham BT. Optically tunable guided-mode resonance filter.
APPLIED OPTICS 2006;
45:7286-93. [PMID:
16983416 DOI:
10.1364/ao.45.007286]
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Abstract
We have demonstrated a guided-mode resonance filter (GMRF) whose properties are tunable with laser illumination through the incorporation of a nonlinear dye. Laser illumination causes a change in the refractive index of the dye-doped portion of the structure, leading to controlled tuning of the GMRF reflectance spectrum. Changes in the refractive index of dye-doped regions are proportional to the intensity of the incident laser beam and are as high as Delta n = 0.09. The reflectance tuning effect occurs on a time scale of many seconds and is completely reversible upon termination of the laser illumination.
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