X-ray or gamma ray systems or devices – Source
Patent
1986-09-05
1989-03-28
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Source
372 5, H01S 316
Patent
active
048171247
ABSTRACT:
A high frequency laser for generating a coherent collimated beam in the ultraviolet to x-ray range using a high energy charged particle beam is provided. The laser utilizes an undulator which in one embodiment is a solid state superlattice composed of alternating layers of two materials have slightly different lattice spacing to provide strain modulation. A beam of charged particles is injected into the undulator to stimulate emission at short wavelengths in ultraviolet to hard x-ray range. The feedback required for lasing action is provided by Bragg diffraction involving the basic crystal lattice or other mirror device such as a superlattice mirror. In another embodiment, a dynamic undulator is used comprising infrared electromagnetic radiation. High energy Lithium ions are injected into the undulator resulting in stimulation of high frequency radiation. The feedback is provided by a superlattice mirror.
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Miller, L. D., "Tunable X-Ray Laser from High Energy Accelerator", Optics Communications, vol. 30, No. 1, 7/1/79, pp. 87-89.
Bogacz et al., "Technique to Produce Coherent X-Ray Radition Via Laser Pumping of Relativistic Ion Beam", Appl. Phys. Lett., 19(6), 11 Aug., 1986, pp. 311-313.
Ikezei et al., "Channeling Radiation in a Periodically Distorted Crystal", Physical Review B, Vol. 30, No. 3, 1 Aug., 1984.
Bogacz Slawomir A.
Ketterson John B.
Wong George K.
Fields Carolyn E.
Hynds Joseph A.
Northwestern University
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