Abstract

We have observed a dispersionlike absorption (or gain) spectrum at the D1 transition in a Rb vapor cell filled with a buffer gas, due to Zeeman coherence of the ground states in a double Λ configuration. Meanwhile, we have also observed superluminal pulse propagation. It is experimentally demonstrated that the front speed of a light pulse still equals the light speed c in vacuum, although the group velocity of the light pulse is (2.2±0.6)×104ms.

© 2006 Optical Society of America

Full Article  |  PDF Article
More Like This
Copropagating superluminal and slow light manifested by electromagnetically assisted nonlinear optical processes

Jiepeng Zhang, Gessler Hernandez, and Yifu Zhu
Opt. Lett. 31(17) 2598-2600 (2006)

Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system

Shang-qi Kuang, Ren-gang Wan, Jun Kou, Yun Jiang, and Jin-yue Gao
J. Opt. Soc. Am. B 26(12) 2256-2260 (2009)

Superluminal propagation of pulsed pseudo-thermal light in atomic vapor

In-Ho Bae, Young-Wook Cho, Hee Jung Lee, Yoon-Ho Kim, and Han Seb Moon
Opt. Express 18(19) 19693-19699 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription