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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 1 — Jan. 1, 2010
  • pp: 65–71

Numerical analysis of a sub-picosecond thin-disk laser oscillator with active multipass geometry showing a variation of pulse duration within one round trip

Joerg Neuhaus, Dominik Bauer, Jochen Kleinbauer, Alexander Killi, Dirk H. Sutter, and Thomas Dekorsy  »View Author Affiliations

JOSA B, Vol. 27, Issue 1, pp. 65-71 (2010)

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The mode locking dynamics of a diode-pumped thin-disk laser oscillator with an active multipass cell operated in ambient atmosphere was studied numerically. The numerical results are compared to experimental results of a passively mode-locked thin-disk Yb:YAG laser with several megahertz repetition rate, sub-picosecond pulse duration, and > 10 μ J pulse energy. The numerical simulations prove that the soliton area theorem predicts a correct pulse duration when considering an average pulse energy inside the oscillator. Furthermore, they show a variation in the full width at half-maximum pulse length for the pulse that propagates within the oscillator. This oscillation shows a behavior that is contrary to a change in the pulse length given by the soliton area theorem when considering the real pulse energies at respective points in the resonator. The “breathing” is caused by the strong influence of the self-phase modulation of the ambient atmosphere and large amounts of dispersion resulting in a deviation from the sech 2 pulse shape and a chirped pulse.

© 2009 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 29, 2009
Revised Manuscript: November 1, 2009
Manuscript Accepted: November 1, 2009
Published: December 18, 2009

Joerg Neuhaus, Dominik Bauer, Jochen Kleinbauer, Alexander Killi, Dirk H. Sutter, and Thomas Dekorsy, "Numerical analysis of a sub-picosecond thin-disk laser oscillator with active multipass geometry showing a variation of pulse duration within one round trip," J. Opt. Soc. Am. B 27, 65-71 (2010)

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