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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 5 — Feb. 10, 2008
  • pp: 656–665

Crystal growth, spectroscopic characterization, and eye-safe laser operation of erbium- and ytterbium-codoped KLu(WO4)2

S. Bjurshagen, P. Brynolfsson, V. Pasiskevicius, I. Parreu, M. C. Pujol, A. Peña, M. Aguiló, and F. Díaz  »View Author Affiliations

Applied Optics, Vol. 47, Issue 5, pp. 656-665 (2008)

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Erbium (Er)- and Ytterbium (Yb)-codoped monoclinic KLu ( WO 4 ) 2 single crystals were grown by top seeded solution growth-slow cooling method for several different doping concentrations. Growth parameters have been optimized to obtain macrodefect-free single crystals. Er energy levels involved in the I 4 13 / 2 I 4 15 / 2 were determined by 6   K polarized optical absorption. The maximum emission cross section for this electronic transition has been evaluated, being 2.85 × 10 20 cm 2 for E N m at 1535   nm . Laser oscillation in the 1.5 μ m range was obtained by pumping the Yb ion at 980   nm and sensitizing Er. The maximum output power achieved was 152   mW , with 1.2% slope efficiency.

© 2008 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(160.1190) Materials : Anisotropic optical materials
(260.2160) Physical optics : Energy transfer

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 1, 2007
Manuscript Accepted: November 23, 2007
Published: February 4, 2008

S. Bjurshagen, P. Brynolfsson, V. Pasiskevicius, I. Parreu, M. C. Pujol, A. Peña, M. Aguiló, and F. Díaz, "Crystal growth, spectroscopic characterization, and eye-safe laser operation of erbium- and ytterbium-codoped KLu(WO4)2," Appl. Opt. 47, 656-665 (2008)

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