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Watt-Level 100-nm Tunable 3- μm Fiber Laser

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2 Author(s)
Xiushan Zhu ; Univ. of New Mexico, Albuquerque ; Jain, R.

Watt-level erbium-praseodymium codoped ZBLAN midinfrared fiber laser with 100-nm continuously wavelength-tunable range (2.7-2.8 m) is demonstrated. Continuous-wave output of 1 W with a linewidth of 1.8 GHz over the entire tuning range is affordable. Owing to relatively small residual populations in the lower laser level I of Er ions in the Er-Pr-codoped system, the wavelength-tunable range shrinking with increasing pump power, which always happens in tunable singly Er-doped ZBLAN fiber lasers, was not observed in this tunable Er-Pr-codoped fiber laser.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 2 )