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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 9 — Sep. 1, 2007
  • pp: 2454–2460

Resonant pumping and upconversion in 1.6 μ m Er 3 + lasers

Jeffrey O. White, Mark Dubinskii, Larry D. Merkle, Igor Kudryashov, and Dmitri Garbuzov  »View Author Affiliations

JOSA B, Vol. 24, Issue 9, pp. 2454-2460 (2007)

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A four-level, plane wave model is proposed for a resonantly pumped 1.6 μ m Er 3 + laser, including the effect of upconversion. A mean population approximation leads to analytical expressions for the threshold and slope efficiency that are highly accurate compared to the numerical solution. Using the beam area as an adjustable parameter, the threshold and slope efficiency agree well with data obtained using a 1% Er:YAG crystal, pumped at 1470 nm , lasing at 1617 nm , in the range 0 100 ° C . According to the model for this laser, the slope efficiency versus absorbed pump power is unaffected by upconversion, but the threshold is increased by a factor of 2–3. The results are important for choosing the optimum doping level and fiber or rod length.

© 2007 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 9, 2007
Revised Manuscript: June 26, 2007
Manuscript Accepted: June 30, 2007
Published: August 29, 2007

Jeffrey O. White, Mark Dubinskii, Larry D. Merkle, Igor Kudryashov, and Dmitri Garbuzov, "Resonant pumping and upconversion in 1.6 μm Er3+ lasers," J. Opt. Soc. Am. B 24, 2454-2460 (2007)

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