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Title: Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'

Abstract

We show that the analysis of the optical solitons in a resonant, lifetime-broadened {lambda}-type atomic system with two-folded lower levels, given recently by D. Han et al. [J. Opt. Soc. Am. B 24, 2244 (2007)], is incorrect. Although in the anomalous dispersion regime near resonance one may obtain a superluminal optical soliton, such a soliton suffers serious absorption and hence cannot propagate a significant distance. However, by choosing appropriate system parameters to work in the normal dispersion regime and hence inside the transparency windows of double dark resonance, an ultraslow optical soliton with very low light intensity can form and propagate stably for a fairly long distance.

Authors:
;  [1];  [2]
  1. State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062 (China)
  2. Department of Physics and Information Science, Yulin Normal University, Yulin 537000, Guangxi (China)
Publication Date:
OSTI Identifier:
21100302
Resource Type:
Journal Article
Journal Name:
Journal of the Optical Society of America. Part B, Optical Physics
Additional Journal Information:
Journal Volume: 25; Journal Issue: 6; Other Information: DOI: 10.1364/JOSAB.25.000951; (c) 2008 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0740-3224
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; DISPERSIONS; LIFETIME; OPTICAL DISPERSION; PHOTON-ATOM COLLISIONS; RESONANCE; SOLITONS; SUPERRADIANCE; VISIBLE RADIATION

Citation Formats

Chao, Hang, Guoxiang, Huang, and Bin, Luo. Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'. United States: N. p., 2008. Web. doi:10.1364/JOSAB.25.000951.
Chao, Hang, Guoxiang, Huang, & Bin, Luo. Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'. United States. https://doi.org/10.1364/JOSAB.25.000951
Chao, Hang, Guoxiang, Huang, and Bin, Luo. Sun . "Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'". United States. https://doi.org/10.1364/JOSAB.25.000951.
@article{osti_21100302,
title = {Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'},
author = {Chao, Hang and Guoxiang, Huang and Bin, Luo},
abstractNote = {We show that the analysis of the optical solitons in a resonant, lifetime-broadened {lambda}-type atomic system with two-folded lower levels, given recently by D. Han et al. [J. Opt. Soc. Am. B 24, 2244 (2007)], is incorrect. Although in the anomalous dispersion regime near resonance one may obtain a superluminal optical soliton, such a soliton suffers serious absorption and hence cannot propagate a significant distance. However, by choosing appropriate system parameters to work in the normal dispersion regime and hence inside the transparency windows of double dark resonance, an ultraslow optical soliton with very low light intensity can form and propagate stably for a fairly long distance.},
doi = {10.1364/JOSAB.25.000951},
url = {https://www.osti.gov/biblio/21100302}, journal = {Journal of the Optical Society of America. Part B, Optical Physics},
issn = {0740-3224},
number = 6,
volume = 25,
place = {United States},
year = {2008},
month = {6}
}