数学物理学报(英文版) ›› 2001, Vol. 21 ›› Issue (2): 275-281.
Kin-Chung Ng
Kin-Chung Ng
摘要：
This paper uses the boundary layer theory to obtain an asymptotic solution of the nonlinear educed wave equation. This solution is valid in the secular region where the geometrical optics result fails. However it agrees with the geometrical optics result when the field is away from the secular region. By using this solution the self-focusing length can also be obtained.