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Paper detail

Higher-order Kerr effect and harmonic cascading in gases

The higher-order Kerr effect (HOKE) has been recently advocated to explain measurements of the saturation of the nonlinear refractive index in gases. Here we show that cascaded third-harmonic generation results in an effective fifth order nonlinearity that is negative and significant. Higher-order harmonic cascading will also occur from the HOKE, and the cascading contributions may significantly modify the observed nonlinear index change. At lower wavelengths cascading increases the HOKE saturation intensity, while for longer wavelengths cascading will decrease the HOKE saturation intensity.

preprint2012arXivOpen access
Morten BacheFalk EilenbergerStefano Minardi
physics.optics
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Morten BacheFalk EilenbergerStefano Minardi

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