| Institution: | (1) Lincoln Laboratory, Massachusetts Institute of Technology, 02173 Lexington, MA, USA;(2) Physikalisches Institut, Universität Stuttgart, D-7000 Stuttgart, Fed. Rep. Germany;(3) Institut für Angewandte Physik, Universität Hamburg, D-2000 Hamburg 36, Fed. Rep. Germany;(4) P.N. Lebedev Institute, SU-117924 Moscow, USSR;(5) Institut für Angewandte Physik, Universität Hamburg, D-2000 Hamburg 36, Fed. Rep. Germany;(6) P.N. Lebedev Institute, SU-117924 Moscow, USSR;(7) Applied Physics Department, Stanford University, 94305 Stanford, CA, USA;(8) Department of Physics, Heriot-Watt University, Edinburgh, Scotland;(9) Laser Section, B.A.R.C., Bombay, India;(10) IBM Thomas J. Watson Research Center, 10598 Yorktown Heights, NY, USA;(11) Department of Electrical Engineering, Colorado State University, 80523 Fort Collins, CO, USA |
