Abstract
Far off-resonant ultrafast and nonlinear light-matter interactions are studied using a one-dimensional atomic model. Results from a pump-probe diagnostic reveal that any higher-order nonlinear refraction is masked by ionization-induced defocusing before it becomes significant. On the other hand, we show that signatures of a higher-order nonlinearity may still be manifest via low-order harmonics of the pump center frequency. Implications for filamentation of femtosecond pulses are pointed out.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
M. Kolesik, E. M. Wright, J. Andreasen, J. M. Brown, D. R. Carlson, and R. J. Jones
Opt. Express 20(14) 16113-16128 (2012)
T.-L. Wang and M. Kolesik
Opt. Lett. 42(20) 4195-4198 (2017)
Zhanxin Wang, Chaojin Zhang, Jiansheng Liu, Ruxin Li, and Zhizhan Xu
Opt. Lett. 36(12) 2336-2338 (2011)