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Optics Letters

Optics Letters

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  • Vol. 30, Iss. 11 — Jun. 1, 2005
  • pp: 1345–1347

Laser emission with low quantum defect in Yb:CaGdAlO4

Johan Petit, Philippe Goldner, and Bruno Viana  »View Author Affiliations


Optics Letters, Vol. 30, Issue 11, pp. 1345-1347 (2005)
http://dx.doi.org/10.1364/OL.30.001345


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Abstract

It is demonstrated that 2% Yb:CaGdAlO4 (called CAlGO) presents favorable thermomechanical properties with a high measured thermal conductivity (kappa_||c = 6.3 and kappa_ _|_c = 6.9 Wm^-1 K^-1). A laser oscillation in this material at 1016 nm is demonstrated for the first time to our knowledge while pumping at 979 nm. This implies a very small quantum defect (3.5%). A simple new figure of merit that takes into account thermomechanical properties and quantum defects is proposed here to compare the resistance of materials under high-power laser pumping. Consequently, Yb:CAlGO is similar to garnets and sesquioxides in regard to laser power resistance.

© 2005 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

Citation
Johan Petit, Philippe Goldner, and Bruno Viana, "Laser emission with low quantum defect in Yb:CaGdAlO4," Opt. Lett. 30, 1345-1347 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-11-1345

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