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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 10 — Oct. 1, 2012
  • pp: 2886–2890

Model of the amplified spontaneous emission generation in thulium-doped silica fibers

Martin Gorjan, Thibault North, and Martin Rochette  »View Author Affiliations


JOSA B, Vol. 29, Issue 10, pp. 2886-2890 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002886


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Abstract

A model of the 2 μm amplified spontaneous emission (ASE) generation in the thulium-doped silica fibers pumped at 1575 nm is presented. Both Al-codoped and Al/Ge-codoped fiber core compositions are studied. The results show that the composition affects the relative slope efficiency of 10% and the bandwidth of 19% of the output ASE. Our results predict that the backward ASE is more powerful and spectrally broader compared to the forward ASE, which is in agreement with previous experiments. Using an asymmetric cavity feedback, 98% of the total output power can be directed in the backward ASE, but with the consequence of losing 50 % of the bandwidth. Such sources are expected to deliver single-mode output with more than 70% slope and 39% power conversion efficiency.

© 2012 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(140.6630) Lasers and laser optics : Superradiance, superfluorescence

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 16, 2012
Revised Manuscript: August 6, 2012
Manuscript Accepted: August 28, 2012
Published: September 24, 2012

Citation
Martin Gorjan, Thibault North, and Martin Rochette, "Model of the amplified spontaneous emission generation in thulium-doped silica fibers," J. Opt. Soc. Am. B 29, 2886-2890 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-10-2886


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References

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