Ultraslow light propagation in an inhomogeneously broadened rare-earth ion-doped crystal

Details Ultraslow light propagation in an inhomogeneously broadened rare-earth ion-doped crystal Ultraslow light propagation in an inhomogeneously broadened rare-earth ion-doped crystal

2005-03-08

arxiv.org/abs/physics/0503060v2

Physics

Optics

Scientific paper

10.1103/PhysRevLett.95.143601

We show that Coherent Population Oscillations effect allows to burn a narrow spectral hole (26Hz) within the homogeneous absorption line of the optical transition of an Erbium ion-doped crystal. The large dispersion of the index of refraction associated with this hole permits to achieve a group velocity as low as 2.7m/s with a ransmission of 40%. We especially benefit from the inhomogeneous absorption broadening of the ions to tune both the transmission coefficient, from 40% to 90%, and the light group velocity from 2.7m/s to 100m/s.

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