Coherent light generators – Free electron laser
Patent
1990-08-08
1993-03-23
Epps, Georgia Y.
Coherent light generators
Free electron laser
372 94, 372 98, 372 99, 372102, 372108, H01S 300
Patent
active
051970716
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE ART
The present invention relates to an SR light source for generating synchrotron radiation light (hereinafter abbreviated as SR light) by making charged particles, such as electrons, revolve along a predetermined particle orbit.
TECHNICAL BACKGROUND
Generally, in a type of a SR light source, wherein charged particles are moved along a circular orbit or an orbit having a straight portion at a speed close to the light velocity with the aid of a single magnet or a plurality of magnets, SR light is generated in the tangential direction of the orbit. SR light beam lines for taking out SR light are normally disposed at a plurality of locations along the orbit. Since the wavelengths of this SR light include short wavelength component, it is expected that the SR light can be utilized in various uses, such as micro-fine machining of super LSI's or the like.
However, in the SR light source in the prior art, practically available SR light was only a small part of a generated light beam, and in practice, the remainder was wasted in a light beam dump, and consequently, the SR light source in the prior art had a shortcoming that a utilization efficiency of light was low.
In addition, since SR light generated from an SR light source has its wavelength components distributed over a wide range and it is incoherent light, it is a common practice that when the SR light is practically used, a wafer for super LSI's or the like is irradiated thereby through a filter or the like. Accordingly, if the SR light also having the nature of monochromatic SR light source, it is expected that the use of SR light and an SR light source would be greatly expanded. Furthermore, it is predicted that if the intensity of SR light can be increased depending upon an object, it will be significant.
Heretofore, in an SR light source having a charged particle orbit including straight section, a trial of generating SR light has been also practiced which has the nature of monochromatic light by providing an undulator which are formed by arraying a plurality of magnets having alternate polarities, at a straight charged particles. However, due to the fact that in order to obtain monochromatic light having a large intensity by this proposal a long straight portion is necessitated, there is a shortcoming that the SR light source itself becomes extremely large-sized.
A problem of the present invention is to provide an SR light source having a high utilization efficiency for SR light.
Another problem of the present invention is to provide an SR light source which can generate SR light also having the nature of monochromatic light or laser light.
Still another problem of the present invention is to provide an SR light source which can enhance an intensity of SR light.
DISCLOSURE OF THE INVENTION
The present invention discloses an SR light source which not only can store charged particles in an orbit but also can store SR light (hereinafter called "photon storage ring"), and intends to resolve all the above-mentioned problems. In more particular, according to the present invention, there is provided a photon storage ring, in which by arranging a reflection mirror or mirrors at the position where SR light generated in the tangential direction of a charged particle orbit can be reflected, the SR light an d the reflected light can be stored within the reflection mirror.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a general construction view showing a photon storage ring according to Preferred Embodiment 1 of the present invention.
FIG. 2 is a general construction view of a photon storage ring for explaining Preferred Embodiment 2 of the present invention.
FIG. 3(a-b) is a time chart for explaining SR light generated from the photon storage ring shown in FIG. 2.
FIG. 4 is a schematic construction view for explaining a photon storage ring according to another preferred embodiment of the present invention.
FIG. 5 is a partial perspective view for explaining a detailed construction of a photon storage ring according to the present invention.
REFERENCES:
patent: 3879679 (1975-04-01), Mourier
patent: 4323857 (1982-04-01), Brau et al.
patent: 4442522 (1984-04-01), Brau et al.
patent: 4466101 (1984-08-01), Schoen
patent: 4529942 (1985-07-01), Pitel et al.
patent: 4598415 (1986-07-01), Luccio et al.
patent: 4661783 (1987-04-01), Gover et al.
patent: 4740973 (1988-04-01), Maday et al.
Patent Abstracts of Japan, vol. 12, No. 90 (P-679) (2937) Mar. 24, 1988.
Patent Abstracts of Japan, vol. 13, No. 288 (E-781) (3636), Jun. 30, 1989.
Epps Georgia Y.
Sumitomo Heavy Industrie's, Ltd.
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