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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 4 — Apr. 1, 2006
  • pp: 760–770

Design principles of q-preserving multipass-cavity femtosecond lasers

Andrew M. Kowalevicz, Alphan Sennaroglu, Aurea Tucay Zare, and James G. Fujimoto  »View Author Affiliations

JOSA B, Vol. 23, Issue 4, pp. 760-770 (2006)

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We describe a new class of femtosecond laser cavity designs that are based on a Herriott-type multipass cavity (MPC) to effectively increase the length of a standard laser resonator. MPC laser designs can be used to increase the output pulse energies or to make more compact resonator configurations. A general theory for MPC lasers is developed by analyzing a periodic optical system, and the conditions are established for the case in which the q parameter of a Gaussian beam is left invariant after a single transit through the system. On the basis of this analysis, we determine the design criteria for two-mirror q-preserving MPCs. Practical laser cavity choices are presented and their trade-offs are examined. We also discuss various experimental setups that use these novel MPC designs to increase pulse energies while maintaining compact cavities.

© 2006 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(320.0320) Ultrafast optics : Ultrafast optics
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

Original Manuscript: August 26, 2005
Manuscript Accepted: October 6, 2005

Andrew M. Kowalevicz, Alphan Sennaroglu, Aurea Tucay Zare, and James G. Fujimoto, "Design principles of q-preserving multipass-cavity femtosecond lasers," J. Opt. Soc. Am. B 23, 760-770 (2006)

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