Observation of Ultraslow Group Velocity of Light in a Solid

Turukhin, A. V.; Sudarshanam, V. S.; Shahriar, M. S.; Musser, J. A.; Hemmer, P. R.

Observation of Ultraslow Group Velocity of Light in a Solid

Authors

Description

We report ultraslow group velocities of light in a solid. Light speeds as slow as 45 m/s were observed, corresponding to a group delay of 66 ms in a 3-mm thick crystal. Reduction of the group velocity is accomplished by using a sharp spectral feature in absorption and dispersion, produced by a Raman excited spin coherence in an optically dense Pr doped Y2SiO5 crystal.
12 pages, 5 figures