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Apparatus and method for controlling optical gain profiles in a temperature independent manner

  • US 6,614,572 B2
  • Filed: 05/17/2002
  • Issued: 09/02/2003
  • Est. Priority Date: 07/19/2001
  • Status: Expired due to Term
First Claim
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1. An apparatus for processing an optical beam, comprising:

  • at least one variable optical element to dynamically alter the polarization state of a polarized optical beam to form a polarization-altered optical beam, wherein said polarization-altered optical beam includes elliptical polarization, wherein said at least one variable optical element is a compound birefringent crystal with a designed retardation response to temperature variations;

    at least one wave plate to process said polarized optical beam, each wave plate having a selected retardation, order of retardation, and orientation; and

    a polarization analyzer operative in conjunction with said at least one variable optical element and wave plate to alter the transmitted amplitude of said polarization-altered optical beam as a function of wavelength, and thereby produce an output optical beam with transmitted amplitude adjusted as a function of wavelength.

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