Superluminal light attenuated by strong dispersion of complex refractive index

doi:10.1088/1674-1056/25/2/027801

中国物理B ›› 2016, Vol. 25 ›› Issue (2): 27801-027801.doi: 10.1088/1674-1056/25/2/027801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Superluminal light attenuated by strong dispersion of complex refractive index

Abdurahman Ahmed Yonis, Vadim Nickolaevich Mal'nev, Belayneh Mesfin Ali

Department of Physics, Addis Ababa University, P O Box 1176, Addis Ababa, Ethiopia

收稿日期:2015-07-18 修回日期:2015-10-14 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: Belayneh Mesfin Ali E-mail:belaynehmes@yahoo.com

Superluminal light attenuated by strong dispersion of complex refractive index

Abdurahman Ahmed Yonis, Vadim Nickolaevich Mal'nev, Belayneh Mesfin Ali

Department of Physics, Addis Ababa University, P O Box 1176, Addis Ababa, Ethiopia

Received:2015-07-18 Revised:2015-10-14 Online:2016-02-05 Published:2016-02-05
Contact: Belayneh Mesfin Ali E-mail:belaynehmes@yahoo.com

摘要/Abstract

摘要： The propagation of narrow packets of electromagnetic waves (EMWs) in frequency dispersive medium with the consideration of the complex refractive index is studied. It is shown that counting in the dispersion of the complex refractive index within the context of the conventional expression of the group velocity of narrow wave packets of EMWs propagating in a dispersive medium results in the appearance of additional constraints on the group velocity, which dictates that the physically acceptable group velocity can only be realized in the case of a negligible imaginary part of the group index. In this paper, the conditions that allow one to realize the physically acceptable group velocity are formulated and analyzed numerically for the relevant model of the refractive index of a system of two-level atoms in the optical frequency range. It is shown that in the frequency band where superluminal light propagation is expected, there is a strong dispersion of the refractive index that is accompanied with strong absorption, resulting in a strongly attenuated superluminal light.

关键词: group velocity, group index, superluminal light, slow waves

Abstract: The propagation of narrow packets of electromagnetic waves (EMWs) in frequency dispersive medium with the consideration of the complex refractive index is studied. It is shown that counting in the dispersion of the complex refractive index within the context of the conventional expression of the group velocity of narrow wave packets of EMWs propagating in a dispersive medium results in the appearance of additional constraints on the group velocity, which dictates that the physically acceptable group velocity can only be realized in the case of a negligible imaginary part of the group index. In this paper, the conditions that allow one to realize the physically acceptable group velocity are formulated and analyzed numerically for the relevant model of the refractive index of a system of two-level atoms in the optical frequency range. It is shown that in the frequency band where superluminal light propagation is expected, there is a strong dispersion of the refractive index that is accompanied with strong absorption, resulting in a strongly attenuated superluminal light.

Key words: group velocity, group index, superluminal light, slow waves

中图分类号: (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

78.20.Ci

73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

Abdurahman Ahmed Yonis, Vadim Nickolaevich Mal'nev, Belayneh Mesfin Ali. Superluminal light attenuated by strong dispersion of complex refractive index[J]. 中国物理B, 2016, 25(2): 27801-027801.

Abdurahman Ahmed Yonis, Vadim Nickolaevich Mal'nev, Belayneh Mesfin Ali. Superluminal light attenuated by strong dispersion of complex refractive index[J]. Chin. Phys. B, 2016, 25(2): 27801-027801.

参考文献 17

[1]	Brillouin L 1960 Wave Propagation and Group Velocity (New York: Academic Press)
[2]	Stenner M D, Gauthier D J and Neifield M A 2003 Nature 425 695
[3]	Brunner N, Scarani V, Wegmuller M, Legre M and Gisin N 2004 Phys. Rev. Lett. 93 203902
[4]	Garrett C G B and McCumber D E 1970 Phys. Rev. A 1 305
[5]	Boyd R W and Gauthier D J 2002 Progress in Optics, (ed. Wolf E) (Amsterdam: Elsevier) Vol. 43, pp. 497-530
[6]	Milonni P W 2005 Fast Light, Slow Light, Left-Handed Light (Bristol and Philadelphia: Institute of Physics Publishing) pp. 35-67
[7]	Gauthier D J and Boyd R W 2007 Photonics Spectra 41 82
[8]	Chu S and Wong S 1982 Phys. Rev. Lett. 48 738
[9]	Wang L J, Kuzmich A and Dogariu A 2000 Nature 406 277
[10]	Schweinsberg A, Lepeskin N N, Bigelow M S, Boyd R W and Jarobo S 2006 Europhys. Lett. 73 218
[11]	Davidovich M V 2009 Physics-Uspekhi 52 415
[12]	Jackson J D 1999 Classical Electrodynamics (New York: John Wiley & Sons, Inc.) pp. 322-339
[13]	Tasgm M E 2012 arXiv: 1204.5460v1 [physics.optics]
[14]	Tanka H, Niurs H, Hayami K, Furue S, Nakayama K, Kohmoto T, Kunitomo M and Fukuda Y 2003 Phys. Rev. A 68 053801
[15]	Kai C, Long-An W, Yan-hua S 2004 Chin. Phys. Lett. 21 770
[16]	Ye D, Zheng G, Wang J, Wang Z, Qiao S, Huangfu J and Ran L 2013 Sci. Rep. 3 1628
[17]	Boyd R W 1992 Nonlinear Optics (San Diego: Academic Press) pp. 277-292

Superluminal light attenuated by strong dispersion of complex refractive index

Superluminal light attenuated by strong dispersion of complex refractive index

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