Photowritten high-Q cavities in two-dimensional chalcogenide glass photonic crystals
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Authors
Lee, Michael W
Grillet, Christian
Tomljenovic-Hanic, Snjezana
Mägi, Eric C
Moss, David J
Eggleton, Benjamin J
Gai, Xin
Madden, Steve
Bulla, Douglas
Luther-Davies, Barry
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Optical Society of America
Abstract
We demonstrate a high-Q(approximately 125,000) photonic crystal (PhC) cavity formed using a postprocessing optical exposure technique where the refractive index of a photosensitive chalcogenide PhC is modified locally. The evolution of the cavity resonances was monitored in situ during writing using a tapered fiber evanescent coupling system, and the Q of 125,000 represents 1 order of magnitude increase over previously reported cavities in two-dimensional chalcogenide glass PhC.
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Optics letters
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Open Access