The frequency domain result ofGaussianbeam scattering from rough surface is extended to the time domain and the effect of the beam waist radius is also discussed.
The variation equation describing distance dependence of the beamwaistof a fundamental Gaussianbeam with high intensity propagating in logarithmically saturable nonlinear media has been deduced.
导出了在对数饱和非线性介质中传播的强激光基模高斯光束宽度随传播距离变化的方程。
3
From the nonlinear Schrdinger equation ofbeam propagating in Kerr absorbing medium, a set of evolution equations describing Gaussianbeamwaist radius have bean deduced.