Development of the pulsed self-start build-up cavity for laser-Compton based photon sources

Laser-Compton based photon source is an X-ray source utilizing a laser-Compton scattering, but it has a problem that the brightness is low. To solve the problem concerning brightness, stacking high power pulsed laser in optical cavity with high finesse and high enhancement factor is important. Typically, the high finesse optical cavity should be controlled accurately, which has been a technical difficulty. Self-start build-up cavity is a new method to skip the difficulty. In this method, transmitted light of an optical cavity is amplified and injected the optical cavity again. Because the whole system selects a wavelength of resonance of the self-start build-up cavity, the control of cavity length is not required in principle. In this study, pulse oscillation of the self-start build-up cavity is discussed. (author)