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Proceedings Article

Active mirrors for intra-cavity compensation of the aspherical thermal lens in thin-disk lasers

[+] Author Affiliations
Stefan Piehler, Birgit Weichelt, Andreas Voss, Marwan Abdou Ahmed, Thomas Graf

Univ. Stuttgart (Germany)

Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82360J (February 9, 2012); doi:10.1117/12.905876
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From Conference Volume 8236

  • Laser Resonators, Microresonators, and Beam Control XIV
  • Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko
  • San Francisco, California, USA | January 21, 2012

abstract

With the development of the thin-disk laser, thermal lensing issues have been drastically reduced. However, fundamental mode operation at high output powers is still limited by severe efficiency reductions due to diffraction losses introduced by the temperature gradient at the boundary of the pump spot. To countervail these aspherical wavefront deformations, high-power laser mirrors featuring deformable surfaces have been developed. The surface of these mirrors resembles the shape of the thermally induced change of optical path length in the pumped laser crystal. The magnitude of the surface deformation can be actively controlled to provide optimal compensation at different power levels.

© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Stefan Piehler ; Birgit Weichelt ; Andreas Voss ; Marwan Abdou Ahmed and Thomas Graf
"Active mirrors for intra-cavity compensation of the aspherical thermal lens in thin-disk lasers", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82360J (February 9, 2012); doi:10.1117/12.905876; http://dx.doi.org/10.1117/12.905876


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