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Optics Communications

Experimental measurement of absorption and dispersion in V-type cesium atom

Jianming Zhao, Lirong Wang, Liantuan Xiao, Yanting Zhao, Wangbao Yin, Suotang Jia

Published Jun 1, 2002• 31 citations
Publisher
DOI
10.1016/s0030-4018(02)01416-5

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Chinese Physics Letters•Nov 23, 2001•11 citations
Electromagnetically induced transparency (EIT) is observed in a three-level multi-V-type system in cesium vapor at room temperature. The absorption and dispersion properties are measured under the condition that the coupling frequency is exactly resonance with transition 6S1/2(F=4) to 6P3/2(F'=3) while the probe frequency is scanned across the transitions from the 6S1/2(F=4) to all structures of the 6P3/2. The effects of the intensity of the pumping beam on EIT signal are investigated. The simple theory model was presented and the results of the experiment agree with the simple theoretical analysis.
The phase noise of incident light fields can be converted into amplitude noise via absorption and dispersion effects in media under electromagnetically induced transparency. The conversion process is sensitive to two-photon detuning. This effect can be used to perform a novel type of Rydberg spectroscopy. We present experimental measurements of the phase noise spectrum (PNS) with Rydberg atoms in a cesium vapor cell. Furthermore, to explore microwave field measurements, a modulation-enhanced PNS approach is proposed.