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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. 9 — Sep. 1, 2012
  • pp: 2320–2328

Lu3Ga5O12 crystal: exploration of new laser host material for the ytterbium ion

Kui Wu, Liangzhen Hao, Huaijin Zhang, Haohai Yu, Yicheng Wang, Jiyang Wang, Xueping Tian, Zhichao Zhou, Junhai Liu, and Robert I. Boughton  »View Author Affiliations


JOSA B, Vol. 29, Issue 9, pp. 2320-2328 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002320


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Abstract

A ytterbium (Yb) doped lutetium gallium garnet (Yb:Lu3Ga5O12, Yb:LuGG) single crystal has been successfully grown by the optical floating-zone method for the first time to our knowledge. Its thermal properties, including specific heat, thermal expansion coefficient, and thermal diffusion coefficient, were measured, and the thermal conductivity was determined to be 4.94Wm1K1 at room temperature. The absorption and fluorescence spectra were measured at room temperature. The stimulated emission cross-sections were calculated using the reciprocity method and Fuchtbauer–Ladenburg formula, respectively. Continuous-wave (CW) laser oscillation of the Yb:LuGG crystal was also demonstrated with a 971 nm diode laser used as the pump source, generating an output power of 3.1 W with a slope efficiency of 44%. The results of our study indicate that the Yb:LuGG crystal is a promising new laser medium, and it is expected to be comparable to the most widely used material, Yb:YAG.

© 2012 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(160.3380) Materials : Laser materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 29, 2012
Revised Manuscript: July 3, 2012
Manuscript Accepted: July 11, 2012
Published: August 6, 2012

Citation
Kui Wu, Liangzhen Hao, Huaijin Zhang, Haohai Yu, Yicheng Wang, Jiyang Wang, Xueping Tian, Zhichao Zhou, Junhai Liu, and Robert I. Boughton, "Lu3Ga5O12 crystal: exploration of new laser host material for the ytterbium ion," J. Opt. Soc. Am. B 29, 2320-2328 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-9-2320

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