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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 16 — Aug. 7, 2006
  • pp: 7073–7086

Modeling rare-earth doped microfiber ring lasers

Yuhang Li, Guillaume Vienne, Xiaoshun Jiang, Xinyun Pan, Xu Liu, Peifu Gu, and Limin Tong  »View Author Affiliations

Optics Express, Vol. 14, Issue 16, pp. 7073-7086 (2006)

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We propose a compact laser configuration based on resonating both the pump and signal light along a microfiber ring doped with active ions. We estimate the minimum Q-factor to obtain lasing and find that values already demonstrated in passive microfiber rings will be sufficient. We model the performance of this device in steady state using rate equations and show that pump resonance can significantly reduce the threshold and increase the quantum efficiency, especially for rings made of materials with weak active ion absorption. Numerical examples for erbium and ytterbium doped devices are presented. Taking into account scattering and coupling losses the optimum pump coupling factor is calculated. The dependences of the quantum efficiency and threshold power on the coupling losses are also investigated. We predict that efficient ytterbium-doped lasers can be obtained with a ring diameter down to a few tens of micrometers.

© 2006 Optical Society of America

OCIS Codes
(140.3560) Lasers and laser optics : Lasers, ring
(140.4780) Lasers and laser optics : Optical resonators
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 5, 2006
Revised Manuscript: June 25, 2006
Manuscript Accepted: July 7, 2006
Published: August 7, 2006

Yuhang Li, Guillaume Vienne, Xiaoshun Jiang, Xinyun Pan, Xu Liu, Peifu Gu, and Limin Tong, "Modeling rare-earth doped microfiber ring lasers," Opt. Express 14, 7073-7086 (2006)

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