Field Mapper

摘要

A field mapping optical system and method for converting a light beam having a known spatially coherent first optical field to a second optical field with a required intensity distribution and flat wavefront at a desired distance from the system, by creating an intermediate optical field, between the first and second optical fields, the intermediate optical field being derived from the inverse Fourier transform of the second optical field. The optical system provides a compact and simplified field mapper.

主权项

1. A field mapping optical system for converting a light beam having a known spatially coherent first optical field to a second optical field with a required intensity distribution and flat wavefront by creating an intermediate optical field, between the first and second optical fields, the optical system comprising:
one or more transmissive refractive optical elements, the one or more elements arranged to provide a first optical section and a second optical section; the first optical section being configured to modify the wavefront of the first optical field to provide an intensity distribution of the intermediate optical field immediately after the second optical section; the second optical section being configured to modify the wavefront of the beam on exiting the first optical section to provide a wavefront of the intermediate optical field immediately after the second optical section; the second optical field being created a distance from an exit of the second optical section; and the intermediate optical field being derived from the inverse Fourier transform of the second optical field.