A Method and an Apparatus for Generating a Phase-Modulated Wave Front of Electromagnetic Radiation

Research output: Patent

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Abstract

The present invention provides a method and a system for generating a phase-modulated wave front. According to the present invention, the spatial phase-modulation is not performed on the different parts of the wave front individually as in known POSLMs. Rather, the spatial phase-modulation of the present invention is performed by generating an amplitude modulation in the wave front, Fourier or Fresnel transforming the amplitude modulated wave front, filtering Fourier or Fresnel components of the Fourier or Fresnel distribution with a spatial filter such as a phase contrast filter, and regenerating the wave front whereby the initial amplitude modulation has transformed into a phase-modulation.
Original languageEnglish
Patent numberWO02/052332 A2
Filing date04/07/2002
Publication statusPublished - 2002
Externally publishedYes

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