Yb-doped glass microcavity laser operation in water.
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 microW of output power. The laser performance is presented, and low-concentration biosensing is discussed as a potential application.
Ostby
Eric P
EP
Department of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.
Vahala
Kerry J
KJ