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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 4, Iss. 12 — Jun. 7, 1999
  • pp: 490–495

High-power “Watt-level” CW operation of diode-pumped 2.7 μm fiber lasers using efficient cross-relaxation and energy transfer mechanisms

B. Srinivasan, J. Tafoya, and R. K. Jain  »View Author Affiliations


Optics Express, Vol. 4, Issue 12, pp. 490-495 (1999)
http://dx.doi.org/10.1364/OE.4.000490


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Abstract

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.

© Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Research Papers

History
Original Manuscript: May 21, 1999
Published: June 7, 1999

Citation
Balaji Srinivasan, J. Tafoya, and R. Jain, "High-power "Watt-level" CW operation of diode-pumped 2.7 �m fiber lasers using efficient cross-relaxation and energy transfer mechanisms," Opt. Express 4, 490-495 (1999)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-4-12-490


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References

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  20. These results were submitted for presentation at the Conference for Lasers and Electro-Optics (CLEO) '99 as a postdeadline paper on 4/26/99 (paper #CPD23, CLEO '99, Baltimore, May 23-28, 1999).
  21. This fiber was obtained from Thorlabs, Inc., NJ, USA.
  22. Note that the lifetime values quoted here were based on our own measurements in Er-doped ZBLAN fibers and as such show small deviations from other values reported in the literature for similar ZBLAN bulk samples and fibers and related fluoride hosts (see references 6,10,13,18).
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