Abstract: The optical resonator as intends to generate coherent X-ray by irradiation of polarized laser interference fringes with electron beam has been unknown. The present invention provides an optical resonator that is capable of preparing polarization laser, polarization X-ray and coherent X-ray. The optical resonator is characterized by comprising an optical resonator that is capable of circulating two or more polarization lasers and irradiation of the polarization lasers with electron beam introduced by an electron beam feed port which is inserted in the intersection of laser paths inside the optical resonator.

Abstract: The present invention provides a burst-laser generator using an optical resonator which produces high pulse-strength of burst-laser in order to conduct laser Compton scattering, comprising: a self-oscillation amplifying optical loop-path and an external optical resonator to burst-amplify laser, wherein, laser supplied by an exciting laser source is self-oscillation amplified with the self-oscillation amplifying optical loop-path and further burst-amplified with the external optical resonator.

Abstract: It has been very difficult to accumulate strong laser in the conventional optical resonator, because firstly it has been very difficult to control a resonator length less than 1 ? in resonation position which is required for the laser amplification more than 1,000 times and secondly, the conventional method has utilized laser strength of amplified laser in the optical resonator as the resonance control signal. The present invention provides an optical resonator system to accumulate strong laser. In the system, unamplified modulation wave or harmonic which are derived from oscillation laser are selectively used to tune a resonator length of the optical resonator.

Abstract: The optical resonator as intends to generate coherent X-ray by irradiation of polarized laser interference fringes with electron beam has been unknown. The present invention provides an optical resonator that is capable of preparing polarization laser, polarization X-ray and coherent X-ray. The optical resonator is characterized by comprising an optical resonator that is capable of circulating two or more polarization lasers and irradiation of the polarization lasers with electron beam introduced by an electron beam feed port which is inserted in the intersection of laser paths inside the optical resonator.

Abstract: It has been very difficult to accumulate strong laser in the conventional optical resonator, because firstly it has been very difficult to control a resonator length less than 1 ? in resonation position which is required for the laser amplification more than 1,000 times and secondly, the conventional method has utilized laser strength of amplified laser in the optical resonator as the resonance control signal. The present invention provides an optical resonator system to accumulate strong laser. In the system, unamplified modulation wave or harmonic which are derived from oscillation laser are selectively used to tune a resonator length of the optical resonator.

Abstract: A photocathode high-frequency electron-gun cavity apparatus of the present invention is provided with a high-frequency acceleration cavity (1), a photocathode (8, 15), a laser entering port (9), a high-frequency power input coupler port (10), and a high-frequency resonant tuner (16). Here, the apparatus adopts an ultra-small high-frequency accelerator cavity which contains a cavity cell formed only with a smooth and curved surface at an inner face thereof without having a sharp angle part for preventing discharging, obtaining higher strength of high-frequency electric field, and improving high-frequency resonance stability.

Abstract: The present invention provides a burst-laser generator using an optical resonator which produces high pulse-strength of burst-laser in order to conduct laser Compton scattering, comprising: a self-oscillation amplifying optical loop-path and an external optical resonator to burst-amplify laser, wherein, laser supplied by an exciting laser source is self-oscillation amplified with the self-oscillation amplifying optical loop-path and further burst-amplified with the external optical resonator.

Abstract: Provided is a laser oscillation apparatus capable of stabilizing resonance even when finesse of an optical resonator is increased and generating stronger laser light than that of a traditional apparatus by accumulating laser light in the optical resonator.

Abstract: A photocathode high-frequency electron-gun cavity apparatus of the present invention is provided with a high-frequency acceleration cavity (1), a photocathode (8, 15), a laser entering port (9), a high-frequency power input coupler port (10), and a high-frequency resonant tuner (16). Here, the apparatus adopts an ultra-small high-frequency accelerator cavity which contains a cavity cell formed only with a smooth and curved surface at an inner face thereof without having a sharp angle part for preventing discharging, obtaining higher strength of high-frequency electric field, and improving high-frequency resonance stability.

Abstract: Provided is a laser oscillation apparatus capable of stabilizing resonance even when finesse of an optical resonator is increased and generating stronger laser light than that of a traditional apparatus by accumulating laser light in the optical resonator.