Self-focusing does not occur for few-cycle pulses

S A Kozlov, A A Drozdov, M A Kniazev, D A Kislin, S Choudhary, R W Boyd
2018 Journal of Physics, Conference Series  
A surprise of nonlinear optics of few-cycle waves, such as the disappearance of the phenomenon of high-power radiation self-focusing, is discussed. An expression is derived and analyzed for the conditions under which the concept of a critical power for self-focusing loses its physical meaning due to the dominance of the process of dispersion over diffraction.
doi:10.1088/1742-6596/1092/1/012066 fatcat:g5mcwzu6wfaq3fxewddda4rcry