Todd Ditmire received his Ph.D. in physics from the University of California@Davis in 1995. He is currently a professor of physics@the University of Texas@Austin, where he is director of the Texas Center for High Intensity Laser Science and the Texas Petawatt Project. He was previously a staff scientist and project leader@Lawrence Livermore National Laboratory in California. Address: Department of Physics, University of Texas, Mail Stop C1600, Austin, TX 78712. Email: tditmire@physics.utexas.edu