@inproceedings{oai:repo.qst.go.jp:00085883,
 author = {住友洋介 and 境武志 and 早川恭史 and 川瀬, 啓悟 and 羽島, 良一 and Keigo, Kawase and Ryoichi, Hajima},
 book = {Proceedings of the 18th Annual Meeting of Particle Accelerator Society of Japan},
 month = {Oct},
 note = {We advance the development of underlying technologies for attoseconds next-generation light sources using the
femtoseconds mid-IR light pulses from the oscillator free electron laser at Nihon University, through the high-harmonic
generations. As a part of our project, currently we attempt an experiment of pulse energy enhancement by an external
cavity, enough to process the non-linear phenomena of the high-harmonic generations. In this paper, we report on the
result of test enhancement by an IR mode-locked fiber laser, and the current status of the pulse accumulation of free
electron laser.},
 title = {中赤外自由電子レーザーパルス高強度化のための外部蓄積実験に向けて},
 year = {2021}
}