Abstract

Calculations are performed of the phase shift caused by the spatial modulation in the plasma density due to interference between a strong pump pulse and a weak probe pulse. It is suggested that a recent experiment [Opt. Express 17, 13429 (2009)] observed an effective birefringence from this plasma grating rather than from the higher-order Kerr effect.

© 2011 Optical Society of America

Femtosecond filamentation in argon and higher-order nonlinearities

Zhanxin Wang, Chaojin Zhang, Jiansheng Liu, Ruxin Li, and Zhizhan Xu
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Nonlinear birefringence due to non-resonant, higher-order Kerr effect in isotropic media

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Opt. Lett. 36(7) 1035-1037 (2011)

Conical emission from laser filaments and higher-order Kerr effect in air

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Higher-order Kerr effect and harmonic cascading in gases

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