小小知识点（四十二）低阶高斯波束和高阶高斯波束

a lowest-order Gaussian-beam wave

We assume the transmitted wave is a unit-amplitude Gaussian beam that, in the plane of the emitting aperture of the transmitter at z =0, can be expressed as 

where F0 and W0 denote the phase front radius of curvature and beam radius, respectively, and k is the optical wave number.

The free-space optical wave in the receiver plane at z = L is another Gaussian beam described by 

注：高斯准直光束对应的F0 =inf，即θ0=1；而高斯聚焦光束对应的F0 =L，即θ0=,0，θ=0

the higher-order TEMmn Hermite-Gaussian beams

Laguerre-Gaussian beam

小小知识点（四十二）低阶高斯波束和高阶高斯波束

原文：https://www.cnblogs.com/weinapang/p/11742439.html