Phase-dependent high refractive index without absorption in a four-level inverted-Y atomic system

Journal Article · Sat Jan 31 00:00:00 EST 2015 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2015V045N01ABEH015508· OSTI ID:22395792

Zeng, Zhi-Qiang; Liu, Fu-Ti ^[1]; Wang, Yu-Ping ^[2]; Gao, Zeng-Hui ^[3]

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1. College of Physics and Electronic Engineering, Yibin University, Yibin 644000 (China)
2. College of Mining and Safety Engineering, Yibin University, Yibin 644000 (China)
3. Computational Physics Key Laboratory of Sichuan Province, Yibin University, Yibin 644000 (China)

We consider a closed four-level inverted-Y system in the presence and the absence of a microwave field. It is found that due to the quantum coherence between the two lower levels, either induced by the spontaneous decay or by the microwave field, the refraction – absorption properties of the system can be modulated by controlling the relative phase of the applied fields in both driven ways. In particular, by properly setting the values of the relative phase, the desirable high index of refraction without absorption can be achieved. (nonlinear optical phenomena)

• OSTI ID: 22395792
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 45, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
MICROWAVE RADIATION
NONLINEAR PROBLEMS
REFRACTION
REFRACTIVE INDEX