Efficient frequency doubling of a femtosecond pulse with simultaneous group-velocity matching and quasi phase matching in period (周期分極反転MgO:LiNbO3素子における群速度整合性フェムト秒カスケード非線形効果)
Nan Ei Yu, Sunao Kurimura, Kenji Kitamura, Jung Hoon Ro, Myoungsik Cha, Satoshi Ashihara, Tsutomu Shimura, Kazuo Kuroda, Takunori Taira.