Journal article ยท Preprint article
Higher-order Kerr effect and harmonic cascading in gases
The higher-order Kerr effect (HOKE) has recently been 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.
Language: | English |
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Year: | 2012 |
Pages: | 4612-4614 |
ISSN: | 15394794 and 01469592 |
Types: | Journal article and Preprint article |
DOI: | 10.1364/ol.37.004612 |
ORCIDs: | Bache, Morten |