Photodarkening rate in Yb-doped silica fibers
Applied Optics, Vol. 47, Issue 9, pp. 1247-1256 (2008)
http://dx.doi.org/10.1364/AO.47.001247
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Abstract
Yb-doped fibers are widely used in laser applications requiring high average output powers and high-peak-power pulse amplification. Photodarkening (PD) is recognized as one limiting factor in these fibers when pumped with high-intensity radiation. We describe an approach for performing quantitative PD studies of fibers, and we present measurements of the rate of PD in Yb-doped single-mode fibers with varying inversion levels. The method is applicable to large-mode-area fibers. We observed a seventh- order dependence of the PD rate on the excited-state Yb concentration for two different fibers; this result implies that PD of a Yb-doped fiber source fabricated using a particular fiber will be strongly dependent on the configuration of the device.
© 2008 Optical Society of America
OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2290) Fiber optics and optical communications : Fiber materials
(140.3380) Lasers and laser optics : Laser materials
(140.3510) Lasers and laser optics : Lasers, fiber
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: September 14, 2007
Revised Manuscript: January 16, 2008
Manuscript Accepted: January 22, 2008
Published: March 18, 2008
Citation
Joona Koponen, Mikko Söderlund, Hanna J. Hoffman, Dahv A. V. Kliner, Jeffrey P. Koplow, and Mircea Hotoleanu, "Photodarkening rate in Yb-doped silica fibers," Appl. Opt. 47, 1247-1256 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-9-1247
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