1. Chemistry and Materials Science Directorate and Physics and Advanced Technologies Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue Livermore, California 94550, NSF Center for Biophotonics Science & Technology, University of California, Davis, 4800 Second Avenue, Suite 2600, Sacramento, California 95817, and Sandia National Laboratories, Post Office Box 969, Livermore, California 94550-9101