Sagnac Interferometry in a Slow-Light Medium

Details Sagnac Interferometry in a Slow-Light Medium Sagnac Interferometry in a Slow-Light Medium

2005-12-14

arxiv.org/abs/physics/0512126v1

Physics

Atomic Physics

4 pages and 4 figures

Scientific paper

10.1103/PhysRevA.74.023805

We use a Sagnac interferometer to measure the dispersive and absorptive properties of room temperature Rubidium vapor on the D_2 line at 780.2 nm. We apply a pump beam such that the resulting Lambda 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.

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