The effect of Kerr nonlinearity and Doppler broadening on slow light propagation

被引：16

作者：

Ali, Hazrat ^{[1
]}

Ziauddin ^{[2
]}

Ahmad, Iftikhar ^{[1
]}

机构：

[1] Univ Malakand, Dept Phys, Khyber Pakhtunkhwa, Pakistan

[2] COMSATS Inst Informat Technol, Dept Phys, Islamabad, Pakistan

来源：

LASER PHYSICS | 2014年 / 24卷 / 02期

关键词：

Kerr nonlinearity; Doppler broadening; group index and slow light propagation; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; ATOMIC GAS;

D O I：

10.1088/1054-660X/24/2/025201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The influence of Kerr nonlinearity and Doppler broadening on the slow light propagation of a dispersive atomic medium is revisited using a four-level 3-type (Rb-87) atomic system under the condition of electromagnetically induced transparency (EIT). The medium exhibits an EIT process which is accompanied by normal dispersion, i.e., sub-luminal (slow light) pulse propagation. In the presence of Kerr nonlinearity and the Doppler broadening effect the dispersion property of the proposed atomic medium is modified, which leads to enhancement of the positive group index of the medium. The combined effect of Kerr nonlinearity and Doppler broadening on slow light propagation inside the medium is the major motivation for this work.

引用

页数：5

共 15 条

[1] Ultraslow light in inhomogeneously broadened media [J].

Agarwal, GS ;

Dey, TN .

PHYSICAL REVIEW A, 2006, 73 (04)

[2] Slow light in Doppler-broadened two-level systems [J].

Agarwal, GS ;

Dey, TN .

PHYSICAL REVIEW A, 2003, 68 (06) :4

[3] Control of Wave Propagation and Effect of Kerr Nonlinearity on Group Index [J].

Ali, Hazrat ;

Ziauddin ;

Ahmed, Iftikhar .

COMMUNICATIONS IN THEORETICAL PHYSICS, 2013, 60 (01) :87-92

[4] Ultraslow light propagation in an inhomogeneously broadened rare-earth ion-doped crystal [J].

Baldit, E ;

Bencheikh, K ;

Monnier, P ;

Levenson, JA ;

Rouget, V .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[5] Observation of ultraslow light propagation in a ruby crystal at room temperature [J].

Bigelow, MS ;

Lepeshkin, NN ;

Boyd, RW .

PHYSICAL REVIEW LETTERS, 2003, 90 (11) :4

[6] Observable effects of Kerr nonlinearity on slow light [J].

Dey, T. N. ;

Agarwal, G. S. .

PHYSICAL REVIEW A, 2007, 76 (01)

[7] NONLINEAR OPTICAL PROCESSES USING ELECTROMAGNETICALLY INDUCED TRANSPARENCY [J].

HARRIS, SE ;

FIELD, JE ;

IMAMOGLU, A .

PHYSICAL REVIEW LETTERS, 1990, 64 (10) :1107-1110

[8] Light speed reduction to 17 metres per second in an ultracold atomic gas [J].

Hau, LV ;

Harris, SE ;

Dutton, Z ;

Behroozi, CH .

NATURE, 1999, 397 (6720) :594-598

[9] Ultraslow group velocity and enhanced nonlinear optical effects in a coherently driven hot atomic gas [J].

Kash, MM ;

Sautenkov, VA ;

Zibrov, AS ;

Hollberg, L ;

Welch, GR ;

Lukin, MD ;

Rostovtsev, Y ;

Fry, ES ;

Scully, MO .

PHYSICAL REVIEW LETTERS, 1999, 82 (26) :5229-5232

[10] Stopping light via hot atoms [J].

Kocharovskaya, O ;

Rostovtsev, Y ;

Scully, MO .

PHYSICAL REVIEW LETTERS, 2001, 86 (04) :628-631

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