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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 3 — Feb. 7, 2005
  • pp: 882–888

Precise measurements of optical cavity dispersion and mirror coating properties via femtosecond combs

Michael J. Thorpe, R. Jason Jones, K. D. Moll, Jun Ye, and Ramin Lalezari  »View Author Affiliations

Optics Express, Vol. 13, Issue 3, pp. 882-888 (2005)

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We precisely determine the dispersion of an optical cavity over a large spectral bandwidth using a broadband optical comb generated by a femtosecond laser. This approach permits the effective characterization of the next generation of mirrors that will offer high reflectivity, minimal absorption/scattering loss, and well-defined dispersion characteristics. Such mirrors are essential for constructing passive, high-finesse cavities capable of storing and enhancing ultrashort pulses and for exploring novel intracavity-based experiments in atomic and molecular spectroscopy and extreme nonlinear optics. We characterize both zero and negative group-delay-dispersion mirrors and compare their performance against the targeted coating design. The high sensitivity of this approach is demonstrated with a precise determination of the group-delay dispersion of air inside a 40-cm long optical cavity, demonstrating an accuracy better than 1 fs2.

© 2005 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(230.4040) Optical devices : Mirrors
(230.5750) Optical devices : Resonators
(310.6860) Thin films : Thin films, optical properties
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Research Papers

Original Manuscript: December 16, 2004
Revised Manuscript: January 25, 2005
Published: February 7, 2005

Micheal Thorpe, R. Jones, K. Moll, Jun Ye, and Ramin Lalezari, "Precise measurements of optical cavity dispersion and mirror coating properties via femtosecond combs," Opt. Express 13, 882-888 (2005)

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