1. NIF and Photon Sciences, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
2. Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA
3. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
4. Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California 90095, USA
5. Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 61005, South Korea
6. Department of Physics and Photon Science, GIST, Gwangju 61005, South Korea