Abstract
We numerically generalize the nonlinear propagation Schrödinger equation by introducing contribution (to the nonlinear refractive index variation) factor α , only for the numerical investigation of the higher-order Kerr effect (HOKE) with the higher-order Kerr nonlinear coefficients (n<sub>4</sub>, n<sub>6</sub>, n<sub>8</sub>). Our results confirm that the uncertainties of the higher-order Kerr nonlinear coefficients have a non-negligible effect on propagation of the intense femtosecond laser pulse in air, when the HOKE is considered. The smaller the α the larger the defocusing that is caused by HOKE, and the weaker the clamping intensity, and the remoter the position where the filamentation starts, and the longer the length of filament. Moreover, the higher-order Kerr terms play a role before the plasma defocusing, if the HOKE is considered.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
