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Germanium Photonic Crystal Nanobeam Cavity with Q > 1,300

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Abstract

We fabricate germanium-based photonic crystal nanobeam cavities and observe a large enhancement (~170 times) of room-temperature photoluminescence signal at a cavity resonance of ~1,700 nm. A cavity quality factor as high as 1,350 is achieved.

© 2015 Optical Society of America

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