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Radiation damping in atomic photonic crystals


Copyright © 2011 American Physical SocietyThe force exerted on a material by an incident beam of light is dependent upon the material’s velocity in the laboratory frame of reference. This velocity dependence is known to be difficult to measure, as it is proportional to the incident optical power multiplied by the ratio of the material velocity to the speed of light. Here we show that this typically tiny effect is greatly amplified in multilayer systems composed of resonantly absorbing atoms exhibiting ultranarrow photonic band gaps. The amplification effect for optically trapped 87Rb is shown to be as much as 3 orders of magnitude greater than for conventional photonic–band-gap materials. For a specific pulsed regime, damping remains observable without destroying the system and significant for material velocities of a few ms-1

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This paper was published in Open Research Exeter.

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