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Optical path length variation using a liquid crystal for tuning a laser

  • US 20030048817A1
  • Filed: 06/07/2002
  • Published: 03/13/2003
  • Est. Priority Date: 09/07/2001
  • Status: Abandoned Application
First Claim
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1. A method of tuning a laser, comprising the steps of:

  • providing a laser beam to an external cavity, the laser beam traveling through a material along a path between a cavity end element and a tuning element, the path having an optical path length, and the material comprising a liquid crystal being sensitive in a characteristic property, selecting a least one mode of the laser by introducing a dispersion element in the path of the laser, and changing the optical path length of the path by changing the characteristic property of the liquid crystal in a way which influences the optical path length of the path to stabilize a mode of the laser.

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