Propagation of femtosecond light pulses in a dye solution: Nonadherence to the conventional group velocity
Year: 2006
Type: article
Abstract: Propagation of femtosecond light pulses in a resonant absorption medium is studied. The propagation time of the light pulses was measured in a dye solution by the optical-Kerr-gate method. Nonadherence to the conventional group velocity domega/dk , which is defined in weak absorption region, was found. The observed wavelength dependences of the group delay and the spectral change in the anomalous dispersion region are qualitatively in good agreement with the theoretical prediction obtained from the new definitions of group velocity, which can be clearly defined even in strong absorption region.
Source: Physical Review E
Authors: T. Kohmoto, Y. Fukui, S. Furue, K. Nakayama, Y. Fukuda
Institution: Kobe University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2007686664