Open AccessHigh-power "Watt-level" CW operation of diode-pumped 27 �m fiber lasers using efficient cross-relaxation and energy transfer mechanisms
Author(s) -
Balaji Srinivasan,
Jason Tafoya,
R. K. Jain
Publication year - 1999
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.4.000490
Subject(s) - zblan , materials science , fiber laser , laser , diode , optoelectronics , optics , ion , chemistry , physics , wavelength , organic chemistry
We report the demonstration of high power (660 mW) CW operation of a diode-pumped mid-IR Er fiber laser. This was achieved by using efficient depopulation of the lower laser level via enhanced cross-relaxation between Er ions and energy transfer to Pr ions (at doping densities much higher than those used previously in Er:ZBLAN), along with optimal pumping of such lasers via custom-designed double-clad fluoride fibers.