[15p-312-1~10] 3.1 Basic optics and frontier of optics

△ [15p-312-8] Development of an optical enhancement cavity with the self-resonating mechanism

〇Yuuki Uesugi¹, Yuji Hosaka², Junji Urakawa³, Tsunehiko Omori^3,4, Atsushi Kosuge³, Kazuyuki Sakaue², Tohru Takahashi⁵, Yosuke Honda^3,4, Masakazu Washio² (1.Tohoku Univ., 2.Waseda Univ., 3.KEK, 4.Sokendai, 5.Hiroshima Univ.)

Keywords:Optical cavity, Light power enhancement, Laser-Compton scattering

High finesse optical cavities are utilized for high-sensitivity measurements in the wide field of science, and also attract attention as a device realizing the power enhancement of laser. However, there was a limit on the finesse which can be used since the such cavities are difficult to maintain the resonance. Recently we developed a new cavity system which maintains the resonance without external control. The power enhancement of about 200,000 times was achieved.