Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Self-focusing of chirped optical pulses in media with normal dispersion

Not Accessible

Your library or personal account may give you access

Abstract

The self-focusing of ultrashort optical pulses in a nonlinear medium with normal dispersion is examined. We demonstrate that chirping the pulse initially can strongly increase the achievable peak intensity by competing with the splitting of the pulse in the time domain. On the one hand, we apply a variational procedure to Gaussian beams, leading to a reduced system of ordinary differential equations that describe the characteristic spatiotemporal evolutions of the chirped pulse. On the other hand, when the chirp induces a temporal compression of the pulse, it is shown by means of exact analytical estimates that a transverse collapse can never occur. In the opposite situation, i.e., when the chirp forces the pulse to expand temporally while it shrinks in the transverse diffraction plane, we display numerical evidence that chirping can generate highly spiky electric fields. We further describe the splitting process that takes place near the self-focusing finite distance of propagation and discuss the question of the ultimate occurrence of a collapse-type singularity.

© 1996 Optical Society of America

Full Article  |  PDF Article
More Like This
Polarization instability of femtosecond pulse splitting in normally dispersive self-focusing media

J. Schjødt-Eriksen, J. V. Moloney, E. M. Wright, Q. Feng, and P. L. Christiansen
Opt. Lett. 26(2) 78-80 (2001)

Spectrum reshaping and pulse self-compression in normally dispersive media with negatively chirped femtosecond pulses

Jun Liu, Xiaowei Chen, Jiansheng Liu, Yi Zhu, Yuxin Leng, Jun Dai, Ruxin Li, and Zhizhan Xu
Opt. Express 14(2) 979-987 (2006)

Amalgamation of interacting light beamlets in Kerr-type media

L. Bergé, M. R. Schmidt, J. Juul Rasmussen, P. L. Christiansen, and K. Ø. Rasmussen
J. Opt. Soc. Am. B 14(10) 2550-2562 (1997)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (35)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved