作者: M.W. Beijersbergen , R.P.C. Coerwinkel , M. Kristensen , J.P. Woerdman
DOI: 10.1016/0030-4018(94)90638-6
关键词:
摘要: We demonstrate experimentally that a spiral phaseplate can convert a TEM 00 laser beam into a helical-wavefront beam with a phase singularity at its axis. The diffractive-optical effect …