@misc{oai:repo.qst.go.jp:00077255, author = {住友, 洋介 and 川瀬, 啓悟 and 羽島, 良一 and 黒澤, 歩夢 and 早川, 恭史 and 境, 武志 and Kawase, Keigo and Hajima, Ryoichi}, month = {Aug}, note = {We study a pulse stacking at an external cavity for the enhancement of peak power, where the pulses are generated at the IR-FEL oscillator at LEBRA facility, Nihon U. Advantages of the accelerator based IR light source include a high peak power, a few cycles short pulse width, and a high repetition rate over MHz, that have a great potential to boost the attosecond science area through the high-harmonic generation with a noble gas target. We started constructing the external cavity with an IR mode-locked fiber laser, since the LEBRA-FEL lasing is too short for the tuning of external cavity. We report the present status of the external cavity construction, and make comments for the further developments., 第16回日本加速器学会年会}, title = {共振器型IR-FELパルス蓄積のための外部増幅共振器の開発と試験蓄積}, year = {2019} }