Abstract

Absorption spectra of cold cesium atoms confined in a magneto-optical trap are observed around the D2 transition line (6S1/2, F=4→6P3/2, F’=5) with the probe laser frequency detuned near the trapping laser frequency. We observe the dispersion-like profile resulted from the stimulated Raman processes with the sub-natural linewidth, and study the behavior of the group velocity of light in trapped cold atoms. By only changing the blue and red detuning of the probe frequency from the trapping laser frequency, we are able to arbitrarily control the speed of a light pulse from subluminal to superluminal velocity.

© 2008 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. H. He, Zh. Hu, Y. Wang, L. Wang, and Sh. Zhu, "Superluminal light propagation assisted by Zeeman coherence" Opt. Lett. 31,2486-2488 (2006).
    [CrossRef] [PubMed]
  2. D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
    [CrossRef]
  3. J. Zhang, G. Hernandez, and Y. Zhu, "Copropagating superluminal and slow light manifested by electromagnetically assisted nonlinear optical processes," Opt. Lett. 31, 2598-2600 (2006).
    [CrossRef] [PubMed]
  4. K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
    [CrossRef]
  5. L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
    [CrossRef]
  6. A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
    [CrossRef]
  7. R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
    [CrossRef]
  8. K. J. Jiang, L. Deng, and M. G. Payne, "Ultraslow propagation of an optical pulse in a three-state active Raman gain medium," Phys. Rev. A 74, 041803(R) (2006).
    [CrossRef]
  9. C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
    [CrossRef] [PubMed]
  10. M. Ducloy and D. Bloch, "Theory of degenerate four-wave mixing in resonant Doppler-broadened systems. I. Angular dependence of intensity and lineshape of phase-conjugate emission," J. Phys. (Paris) 42, 711-721 (1981).
    [CrossRef]
  11. M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).
  12. F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
    [CrossRef]
  13. D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
    [CrossRef]
  14. A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
    [CrossRef]
  15. J. Guo and P. R. Berman, "Recoil-induced resonances in pump-probe spectroscopy including effects of level degeneracy," Phys. Rev. A 47, 4128-4142 (1993).
    [CrossRef] [PubMed]

2006 (3)

2003 (3)

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

2002 (1)

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

2001 (1)

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

1999 (2)

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
[CrossRef]

1993 (1)

J. Guo and P. R. Berman, "Recoil-induced resonances in pump-probe spectroscopy including effects of level degeneracy," Phys. Rev. A 47, 4128-4142 (1993).
[CrossRef] [PubMed]

1991 (1)

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

1990 (1)

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

1981 (1)

M. Ducloy and D. Bloch, "Theory of degenerate four-wave mixing in resonant Doppler-broadened systems. I. Angular dependence of intensity and lineshape of phase-conjugate emission," J. Phys. (Paris) 42, 711-721 (1981).
[CrossRef]

1977 (1)

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

Akulshin, A. M.

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
[CrossRef]

Balic, V.

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

Barreiro, S.

A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
[CrossRef]

Behroozi, C. H.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

Bennink, R. S.

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

Berman, P. R.

J. Guo and P. R. Berman, "Recoil-induced resonances in pump-probe spectroscopy including effects of level degeneracy," Phys. Rev. A 47, 4128-4142 (1993).
[CrossRef] [PubMed]

Bloch, D.

M. Ducloy and D. Bloch, "Theory of degenerate four-wave mixing in resonant Doppler-broadened systems. I. Angular dependence of intensity and lineshape of phase-conjugate emission," J. Phys. (Paris) 42, 711-721 (1981).
[CrossRef]

Boyd, R. W.

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

Braje, D. A.

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

Cimmino, A.

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

Courtois, J. Y.

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

Deng, L.

K. J. Jiang, L. Deng, and M. G. Payne, "Ultraslow propagation of an optical pulse in a three-state active Raman gain medium," Phys. Rev. A 74, 041803(R) (2006).
[CrossRef]

Ducloy, M.

M. Ducloy and D. Bloch, "Theory of degenerate four-wave mixing in resonant Doppler-broadened systems. I. Angular dependence of intensity and lineshape of phase-conjugate emission," J. Phys. (Paris) 42, 711-721 (1981).
[CrossRef]

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

Dutton, Z.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

Ezama, A.

A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
[CrossRef]

Ezekiel, S.

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

Grison, D.

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

Grynberg, G.

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

Guo, J.

J. Guo and P. R. Berman, "Recoil-induced resonances in pump-probe spectroscopy including effects of level degeneracy," Phys. Rev. A 47, 4128-4142 (1993).
[CrossRef] [PubMed]

Hannaford, P.

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

Harris, S. E.

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

Hau, L. V.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

He, H.

Hernandez, G.

Hu, Zh.

Jiang, K. J.

K. J. Jiang, L. Deng, and M. G. Payne, "Ultraslow propagation of an optical pulse in a three-state active Raman gain medium," Phys. Rev. A 74, 041803(R) (2006).
[CrossRef]

Kim, J. B.

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

Kim, K.

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

Kim, S. K.

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

Kwon, M.

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

Lee, Ch.

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

Lounis, B.

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

Mollow, B. R.

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

Monroe, C.

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

Moon, H. S.

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

Opat, G. I.

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

Park, H. D.

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

Payne, M. G.

K. J. Jiang, L. Deng, and M. G. Payne, "Ultraslow propagation of an optical pulse in a three-state active Raman gain medium," Phys. Rev. A 74, 041803(R) (2006).
[CrossRef]

Robinson, H.

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

Salomon, C.

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

Sidorov, A. I.

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

Stroud, C. R.

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

Swann, W.

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

Wang, L.

Wang, Y.

Wieman, C.

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

Wong, V.

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

Wu, F. Y.

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

Yin, G. Y.

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

Zhang, J.

Zhu, Sh.

Zhu, Y.

Europhys. Lett. (1)

D. Grison, B. Lounis, C. Salomon, J. Y. Courtois, and G. Grynberg, "Raman spectroscopy of cesium atoms in a laser trap," Europhys. Lett. 15, 149-154 (1991).
[CrossRef]

J. Korean Phys. Soc. (1)

M. Kwon, K. Kim, H. D. Park, J. B. Kim, and H. S. Moon, "Dependence of EIA spectra on mutual coherence between coupling and probe fields in Cs atomic vapors," J. Korean Phys. Soc. 40, 452-455 (2002).

J. Phys. (Paris) (1)

M. Ducloy and D. Bloch, "Theory of degenerate four-wave mixing in resonant Doppler-broadened systems. I. Angular dependence of intensity and lineshape of phase-conjugate emission," J. Phys. (Paris) 42, 711-721 (1981).
[CrossRef]

Nature (London) (1)

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature (London) 397,594-598 (1999).
[CrossRef]

Opt. Lett. (2)

Phys. Rev. A (6)

A. M. Akulshin, A. Cimmino, A. I. Sidorov, P. Hannaford, and G. I. Opat, "Light propagation in an atomic medium with steep and sign-reversible dispersion," Phys. Rev. A 67, 011801(R) (2003).
[CrossRef]

J. Guo and P. R. Berman, "Recoil-induced resonances in pump-probe spectroscopy including effects of level degeneracy," Phys. Rev. A 47, 4128-4142 (1993).
[CrossRef] [PubMed]

D. A. Braje, V. Balić, G. Y. Yin, and S. E. Harris, "Low-light-level nonlinear optics with slow light," Phys. Rev. A 68,041801(R) (2003).
[CrossRef]

R. S. Bennink, R. W. Boyd, C. R. Stroud, Jr., and V. Wong, "Enhanced self-action effects by electromagnetically induced transparency in the two-level atom," Phys. Rev. A 63, 033804 (2001).
[CrossRef]

K. J. Jiang, L. Deng, and M. G. Payne, "Ultraslow propagation of an optical pulse in a three-state active Raman gain medium," Phys. Rev. A 74, 041803(R) (2006).
[CrossRef]

K. Kim, H. S. Moon, Ch. Lee, S. K. Kim, and J. B. Kim, "Observation of arbitrary group velocities of light from superluminal to subluminal on a single atomic transition line," Phys. Rev. A 68,013810 (2003).
[CrossRef]

Phys. Rev. Lett. (3)

F. Y. Wu, S. Ezekiel, M. Ducloy, and B. R. Mollow, "Observation of Amplification in a Strongly Driven Two-Level Atomic System at Optical Frequencies," Phys. Rev. Lett. 38, 1077-1080 (1977).
[CrossRef]

C. Monroe, W. Swann, H. Robinson, and C. Wieman, "Very cold trapped atoms in a vapor cell," Phys. Rev. Lett. 65, 1571-1574 (1990).
[CrossRef] [PubMed]

A. M. Akulshin, S. Barreiro, and A. Ezama, "Steep Anomalous Dispersion in Coherently Prepared Rb Vapor," Phys. Rev. Lett. 83,4277-4280 (1999).
[CrossRef]

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (5)

Fig. 1.
Fig. 1.

Experimental setup (a) and relevant hyperfine energy levels of Cs atoms (b): Ti:S—Ti:Sapphire laser; ECDL—external cavity diode laser; OI—optical isolator; SP—shaping prism. Trapping beam (T), repumping beam (R) and probe beam (P). ΔP is the one-photon detuning of the probe beam from the trapping frequency.

Fig. 2.
Fig. 2.

The probe dispersion-like spectrum with probe beam scanned near the trapping frequency. (a) Δ=-12MHz, (b) Δ=-17MHz. The negative and positive signals show the absorption and gain, respectively.

Fig. 3.
Fig. 3.

Pulse delay measurements in the cold Cs cloud with Δ=-17MHz. (a) reference pulse; (b) the probe pulse with the one-photon detuning ΔP=145kHz; (c) the probe pulse with the one-photon detuning ΔP=-150kHz; The probe pulse is delayed by 0.25µs in (b) and advanced by 0.13µs in (c). The black solid lines and gray lines are the Gaussian fit and experimental data respectively. The inset figures show the front and trail parts of the pulses for better resolution.

Fig. 4.
Fig. 4.

The positive and negative pulse delay of the probe beam versus ΔP. (a) Δ=-12MHz, (b) Δ=-17MHz.

Fig. 5.
Fig. 5.

The theoretical curves of the absorption spectrum (solid line) and the pulse delay (dot line). The parameters are Δ=-17MHz, χ=3MHz, ku=180kHz.

Metrics