Cold Atoms
Department of Molecular and Optical Physics - University of Freiburg, Germany.

Quantitative analysis of the transient response of the refractive index to conditions of electromagnetically induced transparency
F. Meinert, C. Basler, A. Lambrecht, S. Welte, and H. Helm
Department of Molecular and Optical Physics, University of Freiburg, Stefan-Meier-Strasse 19, 79104 Freiburg, Germany

Phys. Rev. A 85, 013820 (2012) [13 pages]


For the example of the D1 line of 87Rb we analyze the experimental parameters that control the transient response of electromagnetically induced transparency. Quantum coherent free-induction decay is observed on time scales exceeding several milliseconds in a buffer-gas vapor cell. Numerical solutions of the quantum master equation and approximate analytical solutions are tested and absolute comparisons of the transient time scales, power broadening, resonance contrast, and frequency shifts are made. Two actively-phase-locked lasers are employed. The effects of laser phase noise that is not fully correlated are studied.

©2012 American Physical Society

DOI: 10.1103/PhysRevA.85.013820
PACS: 42.50.Gy, 32.80.Qk, 32.30.-r