Topic(题目):Development and Applications of 4 PW Ti:Sapphire Laser?at CoReLS
Speaker(报告人): Prof.Chang Hee Nam（Institute for Basic Science (IBS), Korea）
Date(时间):2017年11月3日（周五）下午3:00
Place(地点):北京大学技术物理楼激光实验室209会议室
Contact person（联系人）:颜学庆（x.yan@pku.edu.cn）
Development and Applications of 4 PW Ti:Sapphire Laser?at CoReLS
Chang Hee Nam
Center for Relativistic Laser Science, Institute for Basic Science (IBS), Korea;
Dept of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Korea
chnam@gist.ac.kr
Research on laser-matter interactions has entered a new era in the relativistic regime thanks to the recent rapid progress of ultrashort high-power laser technology. High-power femtosecond lasers, producing outputs of 1 PW and 1.5 PW at 30 fs from two beamlines, were developed and utilized for high field physics research. One of the PW beamlines has been upgraded to a 4 PW laser at 20 fs. Using this PW laser facility, the Center for Relativistic Laser Science (CoReLS), a research center of Institute for Basic Science (IBS), works on experimental and theoretical investigations of relativistic laser-matter interactions. With the PW laser we succeeded in generating multi-GeV electron beams and in producing protons with energy over 90 MeV. Ultra-intense laser pulses, as the primary source, or short-wavelength radiation and energetic charged particles, as the secondary source, can expose matter under extreme conditions. The exploration of such extreme physical conditions will produce new outcomes in fundamental physics of laser-matter interactions.
