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Published October 1, 2000 | Published
Journal Article Open

Fiber-coupled microsphere laser

Abstract

We demonstrate a 1.5-mm-wavelength fiber laser formed by placement of glass microsphere resonators along a fiber taper. The fiber taper serves the dual purpose of transporting optical pump power into the spheres and extracting the resulting laser emission. A highly doped erbium:ytterbium phosphate glass was used to form microsphere resonant cavities with large gain at 1.5 mm. Laser threshold pump powers of 60 mW and fiber-coupled output powers as high as 3 mW with single-mode operation were obtained. A bisphere laser system consisting of two microspheres attached to a single fiber taper is also demonstrated.

Additional Information

© 2000 Optical Society of America. Received May 8, 2000. This work was supported by the Defense Advanced Research Projects Agency and the U.S. Office of Naval Research.

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August 21, 2023
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