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APS » Journals » Phys. Rev. Lett. » Volume 82 » Issue 26
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Phys. Rev. Lett. 82, 5229–5232 (1999)

Ultraslow Group Velocity and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas

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Michael M. Kash1,5, Vladimir A. Sautenkov1, Alexander S. Zibrov1,3, L. Hollberg3, George R. Welch1, Mikhail D. Lukin4, Yuri Rostovtsev1, Edward S. Fry1,2, and Marlan O. Scully1,2
1Department of Physics, Texas A&M University, College Station, Texas 77843-4242
2Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany
3National Institute for Standards and Technology, Boulder, Colorado 80303
4ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138
5Department of Physics, Lake Forest College, Lake Forest, Illinois 60045

Received 7 April 1999; published in the issue dated 28 June 1999

See accompanying Physics Focus

We report the observation of small group velocities of order 90 m/s and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas ( ≈360K). Media of this kind yield strong nonlinear interactions between very weak optical fields and very sharp spectral features. The result is in agreement with previous studies on nonlinear spectroscopy of dense coherent media.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.5229
DOI:
10.1103/PhysRevLett.82.5229
PACS:
42.50.Gy, 42.55.-f, 42.65.Wi
 
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