✦ LIBER ✦

Comparative study the effect of Yb concentrations on laser characteristics of Yb:YAG ceramics and crystals

✍ Scribed by J. Dong; K. Ueda; H. Yagi; A.A. Kaminskii; Z. Cai

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 389 KB
Volume: 6
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200810136

No coin nor oath required. For personal study only.

✦ Synopsis

Laser performance of Yb:YAG ceramics and singlecrystals doped with different Yb concentrations was investigated using two-pass pumping miniature laser configuration. Highly efficient laser performance was obtained for both Yb:YAG ceramics and single-crystals. For the low doping concentration, the laser performance of ceramics is lower than those of their singlecrystal counterpart. However, better laser performance was observed for heavy-doped Yb:YAG ceramic than single-crystal (C Yb = 20 at.%). The maximum optical-to-optical efficiency decreases with Yb doping concentration for both Yb:YAG ceramics and crystals. However, the decrease of maximum opticalto-optical efficiency is faster for Yb:YAG crystals than that for Yb:YAG ceramics with Yb doping concentration. The effects of Yb concentration and the transmission of the output couplers on the laser performance and output laser wavelength of Yb:YAG ceramics and crystals were addressed by taking account into the intracavity laser intensity and reabsorption. 40 20 0 60 80 10 12 14 16 18 20 Yb concentration, at.% Comparison of the maximum optical-to-optical efficiency of Yb:YAG miniature lasers as a function of Yb concentration. The solid lines were used for illustration

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