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Optical cross-coupling mitigation systems for wavelength beam combining laser systems

  • US 9,778,448 B2
  • Filed: 12/10/2015
  • Issued: 10/03/2017
  • Est. Priority Date: 03/05/2010
  • Status: Active Grant
First Claim
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1. A laser system comprising:

  • an array of beam emitters each emitting a beam having a different wavelength;

    focusing optics for focusing the beams toward a dispersive element;

    a dispersive element for receiving and dispersing the focused beams, thereby forming a multi-wavelength beam; and

    an optical fiber for receiving the multi-wavelength beam, the optical fiber comprising (i) a core having, at an end of the optical fiber, a partially reflective outer surface for (a) receiving the multi-wavelength beam, (b) reflecting a first portion thereof back to the array of beam emitters via the dispersive element, wherein the first portion stabilizes each of the beams to its wavelength, and (c) transmitting a second portion thereof as an output beam composed of multiple wavelengths, and (ii) surrounding the core, a cladding having an outer surface (a) partially defining an end surface of the optical fiber along a diameter of the optical fiber and (b) having a reflectivity to the multi-wavelength beam of less than 1%.

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