Observation of Ultraslow and Stored Light Pulses in a Solid
Alexey V. Turukhin, Venkatapura S. Sudarshanam, M. S. Shahriar +3 more
We report ultraslow group velocities of light in an optically dense crystal of Pr doped Y2SiO5. Light speeds as slow as 45 m/s were observed, corresponding to a group delay of 66 micros. Deceleration and "stopping" or trapping of the light pulse was also observed. These reductions of the group velocity are accomplished by using a sharp spectral feature in absorption and dispersion that is produced by resonance Raman excitation of a ground-state spin coherence.
Physical Review Letters•Dec 20, 2001•888 citations