Experimental investigation of slow light propagation in degenerate two-level system |
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| Authors: | Wang Li-Rong Zhao Yan-Ting Ma Jie Zhao Jian-Ming Xiao Lian-Tuan and Jia Suo-Tang |
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| Affiliation: | State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering,Shanxi University, Taiyuan 030006, China |
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| Abstract: | Slowing a light pulse in a degenerate two-level system is observed with a
double-frequency sweeping technique. The effects of coupling beam intensity,
cell temperature and frequency detunings of the coupling and probe beams in
resonance, on the slowing of light propagation in such a system are
investigated. It is found that group velocities depend strongly on
polarization combinations. A group velocity $v_{\rm g}$=6760m/s of light pulses in
caesium vapour is obtained under the optimal parameters. |
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| Keywords: | electromagnetically induced transparency time delay group velocity |
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