Volume 65, Number 4, February 2004
|Page(s)||485 - 490|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 February 2004|
Observation of cross-phase shift in hot atoms with quantum coherence
The State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics, Shanxi University - Taiyuan, 030006, PRC
Corresponding author: firstname.lastname@example.org
Accepted: 9 December 2003
We directly measure the cross-phase shift and nonlinear refractive index of a three-level Λ-type hot atomic coherence system inside an optical ring cavity. The cross-phase nonlinear index of refraction n2 is significantly enhanced and sharply changed when the conditions of atomic two-photon resonance are closed. The cross-phase shift of π induced by controlling light on the probe wave has been observed under a relatively low controlling power of 16.2. The system is valuable in developing optical devices for the optical information process.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 42.65.Hw – Phase conjugation; photorefractive and Kerr effects
© EDP Sciences, 2004
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