1. Research scientist at La Jolla Institute, La Jolla, CA 92037 and at S-Cubed, a Division of Maxwell Laboratories, Inc., La Jolla, CA 92037 and a research associate of the Institute for Nonlinear Science at the University of California, San Diego, La Jolla, CA 92093.
2. Research scientist at Lawrence Livermore National Laboratory of the University of California, Livermore, CA 94550.
3. Associate professor in the Department of Electrical Engineering at the University of California, Los Angeles, CA 90024.