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Sagnac interferometry in a slow-light medium.

Purves, G. T. and Adams, C. S. and Hughes, I. G. (2006) 'Sagnac interferometry in a slow-light medium.', Physical review A., 74 . p. 23805.


We use a Sagnac interferometer to measure the dispersive and absorptive properties of room temperature Rubidium vapor on the D2 line at 780.2 nm. We apply a pump beam such that the resulting system exhibits electromagnetically induced transparency. Using a "biased alignment" technique we demonstrate a direct and robust method of measuring the rapid variation in the refractive index. Such a "slow-light" Sagnac interferometer is ideally suited to precision measurement applications such as magnetometry and inertial sensing.

Item Type:Article
Keywords:Electromagnetically induced transparency, Group-velocity, Saturatedabsorption, Luminous ether, Atomic gas, Dispersion, Magnetometer;systems, Index, Steep.
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Publisher statement:© 2006 by The American Physical Society. All rights reserved.
Date accepted:No date available
Date deposited:No date available
Date of first online publication:August 2006
Date first made open access:No date available

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