Far-field intensity distribution, M~(2) factor, and propagation of flattened Gaussian beams

摘要

Explicit expressions for the M~(2) factor and field distribution of flattened Gaussian beams that propagate through an unapertured paraxial ABCD system are derived and illustrated with numerical examples. We show thai the far-field expression of flattened Gaussian beams can be readily obtained by use of our results.