@misc{oai:repo.qst.go.jp:00084473,
 author = {HUANG, KAI and Hideyuki, Kotaki and Michiaki, Mori and Timur, Esirkepov and Kevin Koga, James and Yukio, Hayashi and Nobuhiko, Nakanii and Bulanov, Sergey and Masaki, Kando and HUANG, KAI and Hideyuki, Kotaki and Michiaki, Mori and Timur, Esirkepov and Kevin Koga, James and Yukio, Hayashi and Nobuhiko, Nakanii and Bulanov, Sergey and Masaki, Kando},
 month = {Jan},
 note = {Laser wakefield acceleration (LWFA)1 has been studied intensively due to the inherent ultrashort bunch duration (fs) and large acceleration gradient (GV/cm) over conventional accelerators. For application such as pump-probe experiment, knowledge of not only the electron pulse duration, but also the emission time of electron bunches shot by shot are very important. Although it is of great importance, the emission time of the electron bunch from LWFA have barely been conducted in experiment.
Electro-optic (EO) spatial decoding is a convenient technique widely used in THz study2. To measure the emission timing of electrons, we introduced the EO spatial decoding into LWFA. By setting the EO crystal very close to the gas target, we observed the spherical-wavefront coulomb field and derived a new formula describing the temporal mapping relationship3. We discovered that injection position of the electron beams became closer to the drive laser pulse with increased plasma density for Helium gas in the self-injection regime4. With superior data attainability and non-destructive single-shot characteristics, this method could be a candidate as electron emission timing monitor for LWFA experiments., 第25回産研国際シンポジウム},
 title = {Investigation on the emission timings of electron bunches from laser wakefield acceleration via EO spatial decoding},
 year = {2022}
}