Chinese Optics Letters, 2015, 13 (12): 121901, Published Online: Dec. 24, 2015
Group velocity dispersion effect on the collapse of femtosecond laser pulses in air: a revised form for Marburger’s law
190.5530 Pulse propagation and temporal solitons 190.0190 Nonlinear optics 190.3270 Kerr effect 320.2250 Femtosecond phenomena
Abstract
The influence of group velocity dispersion (GVD) on the self-focusing of femtosecond laser pulses is investigated by numerically solving the extended nonlinear Schr?dinger equation. By introducing the GVD length LGVD into the semi-empirical, self-focusing formula proposed by Marburger, a revised one is proposed, which can not only well explain the influence of GVD on the collapse distance, but also is in good agreement with the numerical results, making the self-focusing formula applicable for more cases.
Suyu Li, and Mingxing. Group velocity dispersion effect on the collapse of femtosecond laser pulses in air: a revised form for Marburger’s law[J]. Chinese Optics Letters, 2015, 13(12): 121901.
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