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Kinetic Cooling of Mechanical Structures

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A method and device for reducing the thermal-mechanical motion of a defecting body is disclosed, in which the device includes a semiconductor injection laser used as both a light source and a dual-mirror optical cavity for precisely measuring the motion of the body. The thermally induced motion of the mechanical structure is quenched using a force-feedback technique, in which the information from the structural-motion detector is coupled to the forcing mechanism such that the motion of the deflecting structure is counteracted and thereby reduced.
Hammig, Mark D. (Ann Arbor, MI), Wehe, David K. (Ann Arbor, MI), Nees, John A. (Ann Arbor, MI)
Hammig; Mark D. (2301 Bonisteel 3501 Phoenix Lab University of Michigan Ann Arbor MI)
11/ 163,375
October 17, 2005
FEDERALLY SPONSORED RESEARCH [0001] This invention was made with government support under Contract Number DE-FG04-86NE37969, awarded by the U.S. Department of Energy to The Regents of The University of Michigan. The government has certain rights to the invention.