Abstract

The high-<i>Q</i> whispering-gallery modes of fused-silica microresonators have enabled the development of intracavity-absorption chemical sensors and ultralow-threshold quantum-dot lasers. The sensors can have effective absorption pathlengths of meters, and the lasers have pump thresholds of a few hundred nanowatts. Some examples of both applications will be presented.

© 2007 IEEE

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