Coherent fiber diffractive optical element beam combiner
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United States of America Patent
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Oct 21, 2008
Grant Date -
Aug 30, 2007
app pub date -
Feb 24, 2006
filing date -
Feb 24, 2006
priority date (Note) -
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Abstract
An optical beam combiner and a related method for its operation, in which multiple coherent input beams are directed onto a diffractive optical element (DOE) along directions corresponding to diffraction orders of the DOE, such that the DOE generates a single output beam in a direction corresponding to a desired diffraction order, and suppresses outputs in directions corresponding to unwanted diffraction orders. The phases of the input beams are actively controlled to ensure and maintain the condition that only a single diffraction mode is present in the output of the DOE.
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