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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 20 — Oct. 3, 2005
  • pp: 7976–7981

Z-scan measurements using high repetition rate lasers: how to manage thermal effects

Andrea Gnoli, Luca Razzari, and Marcofabio Righini  »View Author Affiliations

Optics Express, Vol. 13, Issue 20, pp. 7976-7981 (2005)

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We demonstrate the effectiveness of a simple method for using Z-scan technique with high repetition rate lasers managing cumulative thermal effects. Following Falconieri [J. Opt. A, 1 (1999) 662], time evolution of Z-scan signal is recorded. We use data time correlation to extrapolate with accuracy the instantaneous nonlinear optical response of the sample. The method employed allows us to clearly evaluate the order of the absorption process underlying the thermo-optical nonlinearities. Using a 76 MHz repetition rate laser with 120 fs pulsewidth we measure third order nonlinearities and thermal properties of CS2 and toluene in accordance with values obtained with low repetition rate light sources.

© 2005 Optical Society of America

OCIS Codes
(190.4870) Nonlinear optics : Photothermal effects
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Research Papers

Original Manuscript: August 10, 2005
Revised Manuscript: September 16, 2005
Published: October 3, 2005

Andrea Gnoli, Luca Razzari, and Marcofabio Righini, "Z-scan measurements using high repetition rate lasers: how to manage thermal effects," Opt. Express 13, 7976-7981 (2005)

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