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Laser synchronized high-speed shutter for spectroscopic application

United States Patent

October 29, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A fast mechanical shutter, based on rotating chopper wheels, has been designed and implemented to shutter the entrance slit of a spectrograph. This device enables an exposure time of 9 .mu.s to be achieved for a 0.8 mm wide spectrograph entrance slit, achieves 100% transmission in the open state, and an essentially infinite extinction ratio. The device further incorporates chopper wheel position sensing electronics to permit the synchronous triggering of a laser source.
Miles; Paul C. (Tracy, CA), Porter; Eldon L. (Tracy, CA), Prast; Thomas L. (Livermore, CA), Sunnarborg; Duane A. (Livermore, CA)
Sandia Corporation (Livermore, CA)
09/ 594,663
June 15, 2000
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.