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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 6 — Jun. 1, 2006
  • pp: 1083–1090

Growth, spectroscopy, and tunable laser operation of the disordered crystal LiGd ( MoO 4 ) 2 doped with ytterbium

Mauricio Rico, Uwe Griebner, Valentin Petrov, Pilar Ortega, Xiumei Han, Concepción Cascales, and Carlos Zaldo  »View Author Affiliations


JOSA B, Vol. 23, Issue 6, pp. 1083-1090 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001083


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Abstract

The disordered crystal LiGd 0.936 Yb 0.064 ( MoO 4 ) 2 was grown with high optical quality by the flux method using Li 2 MoO 4 as a solvent. The crystal possesses tetragonal symmetry belonging to the space group I 4 ¯ , with two nonequivalent sites occupied by the dopant. Spectroscopic studies at 5 and 300 K provided information on the Stark energy-level splitting and the absorption and emission cross sections of the Yb 3 + ion. Laser operation of Yb 3 + was obtained for the first time in such a Li-containing double tungstate or molybdate. The tuning range with a Ti:sapphire laser pumping extended over 32 nm for the σ polarization and 23 nm for the π polarization. Without a tuning element the laser performance was similar for the two polarizations. By using a 10% transmission output coupler, a maximum output power of 470 mW was obtained with a slope efficiency η = 64.5 % and the absorbed pump power at threshold was 520 mW . Laser operation was also achieved by pumping with a tapered diode laser and a fiber-coupled diode laser module, with a Yb laser output power of 0.66 W in the latter case.

© 2006 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3380) Lasers and laser optics : Laser materials
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 11, 2005
Revised Manuscript: January 9, 2006
Manuscript Accepted: January 24, 2006

Citation
Mauricio Rico, Uwe Griebner, Valentin Petrov, Pilar Ortega, Xiumei Han, Concepción Cascales, and Carlos Zaldo, "Growth, spectroscopy, and tunable laser operation of the disordered crystal LiGd(MoO4)2 doped with ytterbium," J. Opt. Soc. Am. B 23, 1083-1090 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-6-1083

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