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Erbium-doped all-fiber laser at 2.94 microm.

Authors :
Faucher D
Bernier M
Caron N
Vallée R
Source :
Optics letters [Opt Lett] 2009 Nov 01; Vol. 34 (21), pp. 3313-5.
Publication Year :
2009

Abstract

We report what we believe is the first demonstration of laser emission at 2.94 microm in an erbium-doped fluoride fiber laser. The low-loss all-fiber Fabry-Perot laser cavity was formed by two fiber Bragg gratings of 90% and 15% reflectivities in a 6.6 m, 7 mol.% Er-doped double-clad fiber. A maximum cw output power of 5.2 W was measured, which is to our knowledge the highest reported to date for a diode-pumped laser at this wavelength. A coreless endcap was fused at the output fiber end to prevent its deterioration at high output powers. Our results, including the slope efficiency of 26.6% with respect to launched pump power, suggest that erbium could be a better alternative than holmium in the search for a replacement for the flashlamp-pumped Er:YAG at 2.94 microm.

Details

Language :
English
ISSN :
1539-4794
Volume :
34
Issue :
21
Database :
MEDLINE
Journal :
Optics letters
Publication Type :
Academic Journal
Accession number :
19881578
Full Text :
https://doi.org/10.1364/OL.34.003313