Issue |
Europhys. Lett.
Volume 65, Number 4, February 2004
|
|
---|---|---|
Page(s) | 485 - 490 | |
Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
DOI | https://doi.org/10.1209/epl/i2003-10118-y | |
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: wanghai@sxu.edu.cn
Received:
5
September
2003
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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