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Method and apparatus for temporal and spatial beam integration

  • US 5,646,791 A
  • Filed: 01/04/1995
  • Issued: 07/08/1997
  • Est. Priority Date: 01/04/1995
  • Status: Expired due to Term
First Claim
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1. In a laser system having a collimated laser beam with an axis, a laser beam delivery apparatus for temporally and spatially integrating the laser beam, said apparatus comprising:

  • a temporal beam integrator for rotating said beam about the axis thereof, said temporal beam integrator comprising a pair of cylindrical lenses arranged in spaced relationship along the axis of the collimated laser beam, the cylindrical axes of said cylindrical lenses being substantially aligned and the beam emerging from the lenses along a path, and first means for rotating said cylindrical lenses about the beam axis in unison so that a beam passing through said pair of cylindrical lenses is rotated about the beam axis;

    a spatial beam integrator positioned in the path of the beam emerging from said pair of cylindrical lenses; and

    means for providing relative rotation between said spatial beam integrator and said beam.

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