Porras MA, Borghi R, Santarsiero M
Departamento de Fisica Aplicada, Escuela de Ingenieros de Minas, Universidad Politecnica de Madrid, Rios Rosas 21, E-28003 Madrid, Spain.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Oct;62(4 Pt B):5729-37. doi: 10.1103/physreve.62.5729.
We introduce a new family of nonseparable, pulselike and beamlike solutions of the wave equation in the paraxial approximation with pseudonondiffracting behavior. They are the pulsed versions of the Bessel-Gauss beams by Gori et al., and encompass as particular cases the diffraction-free Bessel-X pulses, isodiffracting pulses, and, in the many-cycle limit, Bessel and Gaussian beams. Unlike Bessel-X waves, these solutions carry finite energy but retain nondiffracting behavior over a finite propagation distance, and could be physically produced with mode-locked toroidal resonators.
我们在傍轴近似下引入了一类新的波动方程的非可分离、脉冲状和光束状解，具有伪非衍射行为。它们是戈里等人提出的贝塞尔 - 高斯光束的脉冲版本，并且作为特殊情况包含无衍射贝塞尔 - X脉冲、等衍射脉冲，以及在多周期极限下的贝塞尔光束和高斯光束。与贝塞尔 - X波不同，这些解携带有限能量，但在有限传播距离内保持非衍射行为，并且可以通过锁模环形谐振器实际产生。
