1. J. W. Perry and S. R. Marder, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, and Beckman Institute, California Institute of Technology, Pasadena, CA 91125, USA.
2. K. Mansour, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
3. I.-Y. S. Lee, X.-L. Wu, P. V. Bedworth, C.-T. Chen, D. Ng, Beckman Institute, California Institute of Technology, Pasadena, CA 91125, USA.
4. P. Miles, Logicon RDA, 6053 West Century Boulevard, Post Office Box 92500, Los Angeles, CA 90009, USA.
5. T. Wada, M. Tian, H. Sasabe, Laboratory for Nanophotonic Materials, Institute of Physical and Chemical Research, Frontier Research Program (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-01, Japan.