High-power Er:Yb fiber laser with very high numerical aperture pump-cladding waveguide
- 30 July 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (5) , 817-818
- https://doi.org/10.1063/1.1596378
Abstract
One watt of laser power at 1535 nm has been generated from an Er:Yb codoped double-clad fiber structure, in which the inner cladding was suspended in air by a large number of thin silica webs. The acceptance numerical aperture (NA) of the inner cladding has been measured over a range of wavelengths, for lengths from 1 up to 100 m. For fiber lengths of the NA at the pump diode wavelength was 0.88.
Keywords
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