Review

Controlling the Velocity of Light Pulses

Science  20 Nov 2009:
Vol. 326, Issue 5956, pp. 1074-1077
DOI: 10.1126/science.1170885

You are currently viewing the abstract.

View Full Text

Abstract

It is now possible to exercise a high degree of control over the velocity at which light pulses pass through material media. This velocity, known as the group velocity, can be made to be very different from the speed of light in a vacuum c. Specifically, the group velocity of light can be made much smaller than c, greater than c, or even negative. We present a survey of methods for establishing extreme values of the group velocity, concentrating especially on methods that work in room-temperature solids. We also describe some applications of slow light.

View Full Text