Interference properties of a light beam having a helical wave surface
作者： J.M. Vaughan , D.V. Willetts
DOI: 10.1016/0030-4018(79)90350-X
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摘要: Abstract The spatial wave front characteristics of a laser were examined by two beam interference after amplitude division. Complex patterns observed and are interpreted as due to helical form the phase front. This unusual is implicit in previous analyses cavity eigenfunctions, but properties such co-phasal wavefront have not apparently been previously studied.
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