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Systems and methods for narrowing a wavelength emission of light

  • US 9,383,263 B2
  • Filed: 12/17/2013
  • Issued: 07/05/2016
  • Est. Priority Date: 12/21/2012
  • Status: Active Grant
First Claim
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1. A method of narrowing a wavelength emission of light, the method comprising:

  • transmitting light through a filter in a first direction;

    sending the light from the filter through an optical circulator to a gain medium in a gain chip assembly a first time;

    reflecting a portion of the light leaving the gain chip assembly back through the gain medium in the gain chip assembly a second time and back into the optical circulator;

    sending the reflected portion of the light from the gain chip assembly back through the filter again in the first direction;

    sending the reflected, filtered portion of the light through the optical circulator to the gain medium in the gain chip assembly for a third time;

    directing an unreflected portion of the light leaving the gain chip assembly, after the first time and after the third time, to an optical coherence tomography (OCT) system with intravascular imaging capability, such that the OCT system receives light that has passed twice through the filter and three times through the gain chip assembly.

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