Patent Number: 062263544
Section: claims

1. A short-wavelength electromagnetic-radiation generator comprising: reflector means composed of at least a pair of concave reflectors;  emitting means for emitting electromagnetic radiation so as to be incident on said reflector means; and  electron-beam generating means for emitting an electron beam, said electron beam being emitted in a direction substantially parallel to said reflector-means so as to be incident on said electromagnetic radiation.  reflector-means composed of at least a pair of concave reflectors;  electron-beam generating means for emitting an electron beam, said electron beam being emitted in a direction substantially parallel to said reflector-means and having a diameter adjusted to a diameter of electromagnetic radiation converged by said at least a pair of concave reflectors in said reflector means so that said electron beam is incident on a region where said electromagnetic radiation is converged by said pair of concave reflectors; and  emitting means for emitting said electromagnetic radiation as a pulse beam having a pulse width corresponding to the diameter of said electron beam so as to be incident on said reflector means. 2. A short-wavelength electromagnetic-radiation generator according to claim 1, wherein said reflector means comprises concave reflector groups disposed to be opposed, each concave reflector group being composed of a plurality of aligned concave reflectors. 3. A short-wavelength electromagnetic-radiation generator comprising: 4. A short-wavelength electromagnetic-radiation generator according to claim 3, wherein said reflector means comprises concave reflector groups disposed to be opposed, each concave reflector group being composed of a plurality of aligned concave reflectors. 5. A short-wavelength electromagnetic-radiation generator according to claim 3, wherein said emitting means comprises a Q-switched laser source. 6. A short-wavelength electromagnetic-radiation generator according to claim 3, wherein said emitting means comprises a mode-locked laser source. 7. A short-wavelength electromagnetic-radiation generator according to claim 4, wherein said emitting means comprises a Q-switched laser source. 8. A short-wavelength electromagnetic-radiation generator according to claim 4, wherein said emitting means comprises a mode-locked laser source.