title: Coherent, directional, laserlike emission from random gain media.
abstract: We present experimental evidence for coherent, directional emission from a random gain medium above the threshold for laserlike emission. In particular, we report the first observation (to our knowledge) of a coherent angular backscattering peak above this threshold. A plausible explanation of our findings follows from the assumption that superfluorescent emission occurs in the gain medium above threshold.
authors: Department of Physics, Box 3D, New Mexico State University, Las Cruces, New Mexico 88003, USA.
authors: M
authors: M
authors: Shukri
authors: R L
authors: RL
authors: Armstrong