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Applied Optics

Applied Optics


  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 33 — Nov. 20, 2005
  • pp: 7161–7169

Thickness optimization of the composite gain medium for the oscillator and amplifier of the Lucia laser

Haiwu Yu and Gilbert Bourdet  »View Author Affiliations

Applied Optics, Vol. 44, Issue 33, pp. 7161-7169 (2005)

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Using a theory of quasi-three-level laser ions, we obtained the optimum thickness of the gain medium of Yb:YAG. For the parameters of the oscillator and the amplifier of the diode-pumped Lucia laser (Lasers Ultra-Courts et Intense et Applications), which will deliver a 100 J, 10 Hz, 10 ns pulse train the optimum thicknesses are, respectively, 1.4 and 1.6 mm, with a concentration of 10 at. %. Simulations indicate that the bending of such a thin medium is great but can be eliminated by substitution of a composite gain medium. The optimum thickness of undoped YAG is related to that of Yb:YAG and is also dependent on cooling conditions. Results show that, for a small-aperture oscillator, we can obtain both minimum bending and optical distortion at several doping concentrations. However, greater doping (∼20 at. %) is preferred for a large-aperture amplifier. The results reported will be helpful for the design of gain media for high-average-power thin disk Yb:YAG lasers.

© 2005 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 18, 2005
Revised Manuscript: June 27, 2005
Manuscript Accepted: June 27, 2005
Published: November 20, 2005

Haiwu Yu and Gilbert Bourdet, "Thickness optimization of the composite gain medium for the oscillator and amplifier of the Lucia laser," Appl. Opt. 44, 7161-7169 (2005)

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  1. J.-C. Chanteloup, H. Yu, G. Bourdet, S. Ferré, A. Fülöp, S. Le Moal, C. Dambrine, A. Pichot, G. Le Touzé, Z. Zhao, “Overview of the Lucia laser program: towards 100-joules, nanosecond pulse, kW averaged power, based on ytterbium diodepumped solid state laser,” in Solid State Lasers XIV: Technology and Devices, H. J. Hoffman, R. K. Short, eds., Proc. SPIE5707, 105–116 (2005).
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