Abstract

A ytterbium-doped silica microcavity laser demonstrates stable laser emission while completely submerged in water. To our knowledge, it is the first solid-state laser whose cavity mode interacts with water. The device generates more than 2 μW of output power. The laser performance is presented, and low-concentration biosensing is discussed as a potential application.

© 2009 Optical Society of America

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History
Original Manuscript: January 12, 2009
Manuscript Accepted: March 1, 2009
Revised Manuscript: February 28, 2009
Published: April 3, 2009

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Author Affiliations

Eric P. Ostby, Kerry J. Vahala

California Institute of Technology

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