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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 9 — May. 5, 2003
  • pp: 1106–1113

Design criteria for Herriott-type multi-pass cavities for ultrashort pulse lasers

Alphan Sennaroglu and James G. Fujimoto  »View Author Affiliations


Optics Express, Vol. 11, Issue 9, pp. 1106-1113 (2003)
http://dx.doi.org/10.1364/OE.11.001106


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Abstract

We investigate the general characteristics of Herriott-type multipass cavities (MPC) for femtosecond lasers. MPCs can be used to increase the laser pulse energy by extending the laser cavity path length and decreasing the repetition rate, as well as to make standard repetition rate lasers more compact. We present an analytical design condition for MPCs which preserve the Gaussian beam q parameter, enabling the laser path length to be extended while leaving the Kerr-lens modelocking operating point of the cavity invariant. As a specific example, we analyze q preserving MPCs consisting of a flat and curved mirror to obtain analytical expressions for the cavity length. This predicts the optimum MPC designs that minimize the pulse repetition rate for given specifications. These design conditions should prove useful for designing a wide range of high pulse energy or compact femtosecond lasers.

© 2003 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(140.0140) Lasers and laser optics : Lasers and laser optics
(320.0320) Ultrafast optics : Ultrafast optics

ToC Category:
Research Papers

History
Original Manuscript: March 11, 2003
Revised Manuscript: April 22, 2003
Published: May 5, 2003

Citation
Alphan Sennaroglu and James Fujimoto, "Design criteria for Herriott-type multi-pass cavities for ultrashort pulse lasers," Opt. Express 11, 1106-1113 (2003)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-11-9-1106


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References

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