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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 16, Iss. 1 — Jan. 1, 1999
  • pp: 164–172

Ytterbium-doped Ca4GdO(BO3)3: an efficient infrared laser and self-frequency doubling crystal

F. Mougel, K. Dardenne, G. Aka, A. Kahn-Harari, and D. Vivien  »View Author Affiliations


JOSA B, Vol. 16, Issue 1, pp. 164-172 (1999)
http://dx.doi.org/10.1364/JOSAB.16.000164


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Abstract

The surge of interest in ytterbium-doped materials has led to their being proposed as substitutes for their widely used neodymium counterparts for infrared laser emission. Spectroscopic and laser investigations of ytterbium-doped Ca4GdO(BO3)3 (Yb:GdCOB), a new ytterbium-doped crystal, are reported. Laser performances under titanium:sapphire pumping suggest that this material is suitable for schemes that include laser-diode pumping. A maximum slope efficiency of 58.8% with a corresponding laser threshold of 40 mW has been demonstrated with a 1% output coupler. Laser oscillations were also observed for output-coupler transmissions of as much as 10%. Self-frequency doubling of infrared-laser emission has been observed for the first time to our knowledge in an ytterbium-doped medium. The recent demonstration of the interesting self-frequency-doubling properties of neodymium-doped Ca4GdO(BO3)3 suggests that Yb:GdCOB could also be efficient in visible laser emission because of its lack of reabsorption at the second-harmonic wavelength. All these results show that the calcium oxoborate family can be useful compact and efficient laser-diode-pumped visible-laser sources.

© 1999 Optical Society of America

OCIS Codes
(140.3580) Lasers and laser optics : Lasers, solid-state
(160.3380) Materials : Laser materials
(160.4330) Materials : Nonlinear optical materials
(160.4670) Materials : Optical materials

Citation
F. Mougel, K. Dardenne, G. Aka, A. Kahn-Harari, and D. Vivien, "Ytterbium-doped Ca4GdO(BO3)3: an efficient infrared laser and self-frequency doubling crystal," J. Opt. Soc. Am. B 16, 164-172 (1999)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-16-1-164

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