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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 2 — Jan. 23, 2006
  • pp: 670–677

Highly efficient pumping configuration for microchip solid-state laser

T. Dascalu and T. Taira  »View Author Affiliations


Optics Express, Vol. 14, Issue 2, pp. 670-677 (2006)
http://dx.doi.org/10.1364/OPEX.14.000670


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Abstract

We present a new geometry for edge-pumping of a solid-state microchip laser. This design, which consists of a thin-disk gain crystal that has on top a diffusion bonded undoped material that guides the pump light, allows a good thermal heat management by reducing the thickness of the gain media, whereas the pump optics is kept simple. Simulations show that more than 0.95 of the pump radiation with uniformity coefficient in excess of 0.95 can be absorbed in an Yb:YAG/YAG composite device that has a 200-μm thick, 15-at.% Yb:YAG of 3.6-mm diameter. First experiments with this configuration produced on-time 34 W output power for 220 W on-time pump power and 0.26 slope efficiency. Power scaling possibilities are discussed.

© 2006 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.5560) Lasers and laser optics : Pumping
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(140.6810) Lasers and laser optics : Thermal effects

Citation
T. Dascalu and T. Taira, "Highly efficient pumping configuration for microchip solid-state laser," Opt. Express 14, 670-677 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-2-670


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References

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  5. T. Dascalu, N. Pavel, and T. Taira, "90 W continuous-wave diode edge-pumped microchip composite Yb:Y3Al5O12 laser," Appl. Phys. Lett. 83, 4086-4088 (2003). [CrossRef]
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