Abstract
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, , of two well-characterized semiconductors ( and ) 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
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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: erratum," J. Opt. Soc. Am. B 26, 1663-1663 (2009)https://opg.optica.org/josab/abstract.cfm?uri=josab-26-8-1663
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