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Laser intra-cavity electronic wavelength tuner

  • US 20070280310A1
  • Filed: 06/02/2006
  • Published: 12/06/2007
  • Est. Priority Date: 06/02/2006
  • Status: Active Grant
First Claim
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1. A wavelength-adjustable laser, comprising:

  • a. a gain medium for amplifying a laser beam in a wavelength range;

    b. a first optical reflector;

    c. an acousto-optical modulator located between the gain medium and the first optical reflector such that the acousto-optical modulator diffracts a portion of the laser beam into a plurality of diffracted laser beams wherein each diffracted laser beam diffracts at a different angle from an optical axis formed by the laser beam based on the wavelength of the diffracted laser beam;

    d. a second optical reflector and a third optical reflector positioned about the optical axis such that only a selected diffracted laser beam from the plurality of diffracted laser beams is reflected off both the second optical reflector and the third optical reflector into the acousto-optical modulator; and

    e. an adjustable radio-frequency source coupled to the acousto-optical modulator wherein the wavelength of the selected diffracted laser beam is changed by adjusting the frequency of a radio signal emitted from the adjustable radio-frequency source.

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