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Long cavity laser sensor for large FOV auto-tracking

  • US 8,923,359 B1
  • Filed: 07/29/2011
  • Issued: 12/30/2014
  • Est. Priority Date: 08/06/2010
  • Status: Active Grant
First Claim
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1. A laser-based, remote sensing apparatus, comprising:

  • a long cavity laser comprising;

    a gain medium; and

    a segmented mirror configured to return electro-magnetic radiation (EMR) emitted from the gain medium to the gain medium;

    wherein the long cavity laser is configured to establish a laser beam of the EMR between the long cavity laser and a first object in a field of view (FOV) in response to a reflection of the EMR from the first object;

    a detector configured to;

    receive EMR from the FOV, the EMR including a reflected portion of the laser beam; and

    detect the laser beam based on the reflected portion; and

    a controller coupled to the segmented mirror and the detector, and configured to signal the segmented mirror to alter a reflectivity of a portion of the segmented mirror to thereby change an energy level of the laser beam between the long cavity laser and the first object.

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