US Patent 7259914 Attenuator for high-power unpolarized laser beams

Patent 7259914 was granted and assigned to Coherent (operating system) on August, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Coherent (operating system)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

72599140

Patent Inventor Names

H. Yang Pang0

Norman Hodgson0

Date of Patent

August 21, 2007

Patent Application Number

112145530

Date Filed

August 30, 2005

Patent Primary Examiner

‌

Stephone B. Allen

Patent abstract

A method for attenuating an unpolarized laser beam includes separating the laser beam into two plane-polarized beams. The plane-polarized beams are polarization rotated. Each of the polarization-rotated beams is separated into two plane-polarized portions. One of the portions of one polarization-rotated beam is combined with one of the portions of the other polarization-rotated beam to provide an attenuated output-beam.