2000/10/13 by P. Sprangle, Sprangle, P., J. R. Penano +3
Physics and Astronomy · #FOS: Physical sciences #General Physics (physics.gen-ph) #Optics (physics.optics) #physics.gen-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.physics/0010033
10 pages, 3 figures, submitted to Nature 10/11/00
arxiv created 2000/10/13 · arxiv updated 2009/12/01
Researchers claim to have observed superluminal (faster than light) propagation of a laser pulse in a gain medium by a new mechanism in which there is no distortion of the pulse [Nature, 406, 277 (2000)]. Our analysis shows that the observed mechanism is due to pulse distortion arising from a differential gain effect and should not be viewed as superluminal propagation.