1. Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093, USA
2. Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
3. Central Laser Facility, STFC Rutherford-Appleton Laboratory, Didcot OX11 0QX, United Kingdom
4. Center for Energy Research, University of California San Diego, La Jolla, California 92037, USA