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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 2 — Feb. 1, 2008
  • pp: 159–165

Broadband Z-scan characterization using a high-spectral-irradiance, high-quality supercontinuum

Mihaela Balu, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland, Sheng Yao, Kevin Belfield, Shijun Zheng, Stephen Barlow, and Seth Marder  »View Author Affiliations

JOSA B, Vol. 25, Issue 2, pp. 159-165 (2008)

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We generate a high-spectral-irradiance, high-quality continuum by weakly focusing femtosecond pulses in Kr gas. We use this continuum as a source for rapid Z-scan measurements of the degenerate nonlinear absorption spectrum and the associated dispersion of the nonlinear refraction in optical materials throughout the visible. We measure the degenerate two-photon absorption spectra and the dispersion of the nonlinear refractive index, n 2 , of two well-characterized semiconductors ( ZnSe and ZnS ) as reference samples for our method, along with dilute solutions of organic materials. The latter materials demonstrate application of the technique to samples with lower nonlinearities.

© 2008 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(300.6420) Spectroscopy : Spectroscopy, nonlinear

ToC Category:

Original Manuscript: August 28, 2007
Revised Manuscript: November 1, 2007
Manuscript Accepted: November 2, 2007
Published: January 9, 2008

Virtual Issues
Vol. 3, Iss. 3 Virtual Journal for Biomedical Optics

Mihaela Balu, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland, Sheng Yao, Kevin Belfield, Shijun Zheng, Stephen Barlow, and Seth Marder, "Broadband Z-scan characterization using a high-spectral-irradiance, high-quality supercontinuum," J. Opt. Soc. Am. B 25, 159-165 (2008)

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