Does anyone have any references or pointers to the complete electromagnetic field of a "Gaussian Beam"?(adsbygoogle = window.adsbygoogle || []).push({});

By Gaussian, I mean that for a beam propagating in the z direction, a cross-section of the beam in the x-yplane has

|E| = k exp( -(x^2+y^2)/w^2 )

see for instance

http://en.wikipedia.org/wiki/Gaussian_beam

I gather that real laser beams tend to have this sort of "Gaussian" profile. However, I haven't been able to find out anything with exact formulas for Ex, Ey, and Ez. [itex]\nabla \cdot E = 0[/itex] seems to imply that Ez is not zero.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Gaussian Beams (E&M)

**Physics Forums | Science Articles, Homework Help, Discussion**