Comments on Superluminal Laser Pulse Propagation
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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.
10 pages, 3 figures, submitted to Nature 10/11/00
10 pages, 3 figures, submitted to Nature 10/11/00