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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 24 — Dec. 15, 2012
  • pp: 5033–5035

Power scaling of fundamental-mode thin-disk lasers using intracavity deformable mirrors

Stefan Piehler, Birgit Weichelt, Andreas Voss, Marwan Abdou Ahmed, and Thomas Graf  »View Author Affiliations


Optics Letters, Vol. 37, Issue 24, pp. 5033-5035 (2012)
http://dx.doi.org/10.1364/OL.37.005033


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Abstract

Since its first demonstration almost two decades ago, the concept of the thin-disk laser has proven its excellent power scaling properties, enabling output powers in the multi-kW-range at decent beam quality. However, power scalability in fundamental-mode operation is limited by severe diffraction losses arising from thermally induced aspherical wavefront distortions in the pumped laser crystal. In order to compensate for these wavefront distortions, we have developed a deformable mirror concept based on pneumatic actuation, providing a step-like surface deformation with adaptable magnitude. Using one of these mirrors, we have achieved output powers as high as 815 W at nearly diffraction-limited beam quality (M2<1.4) from a single disk, which is—to the best of the authors’ knowledge—the highest output power at this beam quality demonstrated so far.

© 2012 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 26, 2012
Revised Manuscript: October 26, 2012
Manuscript Accepted: October 27, 2012
Published: December 4, 2012

Citation
Stefan Piehler, Birgit Weichelt, Andreas Voss, Marwan Abdou Ahmed, and Thomas Graf, "Power scaling of fundamental-mode thin-disk lasers using intracavity deformable mirrors," Opt. Lett. 37, 5033-5035 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5033

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