"原田健一,小田部荘達,宗宮健太郎","次世代重力波検出器に向けた非線形光学効果を用いた信号増幅システムの開発VI","日本物理学会",,,,,,2020,Sept. "小田部荘達,原田健一,宗宮健太郎","次世代重力波検出器に向けた非線形光学効果を用いた信号増幅システムの開発V","日本物理学会",,,,,,2020,Sept. "Sotatsu Otabe,Ken-ichi Harada,Kentaro Somiya","Development of the signal amplification system with a stiff optical spring","KAGRA Remote meeting",,,,,,2020,Aug. "Ken-ichi Harada,Sotatsu Otabe,Kentaro Somiya","Signal amplification experiments","2nd QFilter workshop",,,,,,2020,Feb.