The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2004
Filed:
Jan. 25, 2001
Harold E. Bennett, Ridgecrest, CA (US);
Bennett Optical Research, Inc., Ridgecrest, CA (US);
Abstract
Limiter optics for an ignition feedback regenerative free electron laser amplifier have a pickoff mirror direct a portion of the output from the free electron laser through a focusing assembler. After expanding this pickoff beam spatially and temporally, the focusing assembler first focuses the expanded pickoff beam to a focal point, the expanded focused pickoff beam is then passed through a movable limiter plate which serves as an off switch if the pickoff beam is above a predetermined intensity and then refocuses the expanded pickoff beam back into the free electron laser to enhance the emission intensity of the output beam. The expanded mirror may be a half silvered mirror or a phased mirror with a plurality of mesas. The pickoff mirror may be convex. The half silvered mirror produces two segments in the pickoff beam with a time lag dependent on the thickness of the mirror. The phased mirror creates a plurality of parallel beams for the expander beam with a predetermined time lag for each of said paralleled beams created. Orientation of a phased mirror may be rotated to control spatial separation of parallel beams.