1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
2. University of Rochester-Laboratory for Laser Energetics, 250 E. River Rd., Rochester, New York 14623-1299, USA
3. General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA
4. Diamond Materials, GmbH, Hans-Bunte-Str. 19, 79108 Freiburg, Germany