Giving to CREOL CREOL, The College of Optics & Photonics

Seminar: "Laser-Driven Particle Acceleration Performed with Femtosecond PW Lasers" by Chang Hee Nam

Thursday, March 31, 2016 2:00 PM to 3:00 PM
CREOL Room 103


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


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, have been developed. Using this PW laser facility at GIST, 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 electrons through two stages of amplification and in producing protons with energy over 90 MeV. Further improvements in laser particle acceleration have been achieved by controlling experimental parameters such as spectral phase and polarization of lasers, and target conditions. 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.

Fig. 1 Experimental area showing two target chambers along with two pulse compression chambers for two PW laser beamlines


Chang Hee Nam received his Ph. D. in plasma physics from Princeton University in 1988. After working at Princeton Plasma Physics Laboratory as a staff research physicist until 1989, he joined KAIST as a faculty member and became a full professor in 1998. He started the Coherent X-ray Research Center in 1999 with the funding from the Ministry of Science and Technology through the Creative Research Initiative Program. After finishing the CXRC program in 2012, he launched the Center for Relativistic Laser Science (CoReLS), a research center of Institute for Basic Science (IBS), for the exploration of relativistic laser-matter interactions using femtosecond PW lasers at GIST. He has received several awards including the scientist-of-the-month award from the Ministry of Science and Technology and the award from the National Academy of Science. He serves the scientific advisory committees of ELI - ALPS in Hungary and of ELI-NP in Romania. He is a fellow of the American Physical Society and also of the Optical Society of America.

For additional information:

Dr. Martin C. Richardson

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