2026-09-01 量子科学技術研究開発機構
図１．新たに考案したコヒーレント結合装置の概略図（2パルス分割・結合例）
＜関連情報＞
- https://www.qst.go.jp/site/press/20260901.html
- https://opg.optica.org/ol/abstract.cfm?uri=ol-51-17-4984
Ti:サファイア増幅器を用いた多次元受動コヒーレントビーム合成によるフェムト秒テラワットパルス Femtosecond terawatt pulses by multi-dimensional passive coherent beam combination with a Ti:sapphire amplifier
Hiromitsu Kiriyama, Yasuhiro Miyasaka, Hajime Sasao, and Hiroyuki Toda
Optics Letters Published: September 1, 2026
DOI:https://doi.org/10.1364/OL.608196
Abstract
We demonstrate, for the first time to our knowledge, the simultaneous implementation of chirped-pulse amplification and fully passive filled-aperture coherent beam combination (CBC) of spatiotemporally separated four pulses with a Ti:sapphire amplifier. The system delivers what we believe to be a record-breaking broadband pulse energy of 73 mJ with a broad spectral bandwidth of 34 nm. After compression to 41 fs, the system achieves a peak power of over 1.2 terawatts. We believe that these results represent the highest peak power ever reported in any filled-aperture CBC approach.
