Patent ID: 8755421
Filing Date: 2014-06-17
Classification: H01S

Abstract:
1. A method for producing mutually-coherent operation of a plurality of light emitters, each of the emitters outputting a respective power and having a respective brightness, the method comprising: combining respective beams received from each of the plurality of emitters to form a composite beam containing a respective contribution from each of the emitters; and feeding back to all of the emitters at least a narrowband portion of the composite beam, the portion having a selected wavelength and containing a respective contribution from each of the emitters, wherein mutually coherent, phase-locked operation of the plurality of emitters is achieved such that each of the emitters lases at the selected wavelength with a phase difference that results in a coherent output beam that constructively combines the beams from each of the emitters such that the output beam has a brightness that is greater than the brightnesses of the individual emitters.