应用物理

Vol.3 No.1 (January 2013)

原子蒸汽压与多普勒效应对量子相干气体光学特性的影响
Influence of Vapor Pressure and Doppler Effect on the Optical Property of a Coherent Atomic Vapor

 

作者:

赵 行 , 梅胜涛 :浙江大学光电信息工程学系,现代光学仪器国家重点实验室,杭州

沈建其 :浙江大学光电信息工程学系,现代光学仪器国家重点实验室,杭州;浙江大学光及电磁波研究中心,杭州

 

关键词:

量子相干原子气体饱和蒸汽多普勒效应色散行为 Quantum Coherent Atomic Vapor Saturated Vapor Doppler Effect Dispersion Characteristics

 

摘要:

研究了在不同温度下三能级相干原子气体的光学特性(介电系数和群速)色散行为。求解三能级原子系统完备密度矩阵方程,得到所有密度矩阵元的色散行为,然后考虑多普勒频移修正和原子气体饱和蒸汽压(饱和密度)随着温度的变化关系,进行数值求解,给出了探针光群速的色散行为及与原子蒸汽温度的函数依赖关系图示。本文所研究的不同温度下三能级相干原子气体的光学特性可以作为某些温控光子学器件(如光子开关、光逻辑门、光子晶体管)的基本物理原理。

The dependence of dispersion characteristics of electric permittivity and group velocity on the temperature in a three-level quantum coherent atomic vapor is considered based on the numerical solution of the density matrix equation of the three-level atomic system. The behavior of dispersion of all the density matrix elements has been obtained, and both the Doppler frequency shift and the saturation density that depend upon the temperature of the saturated atomic vapor have been taken into account. The presented optical response of the quantum coherent vapor can be utilized as a fundamental mechanism for some temperature-controlled photonic devices such as optical switches, photonic logic gates and optical transistors.






文章引用:

赵 行 , 梅胜涛 , 沈建其 (2013) 原子蒸汽压与多普勒效应对量子相干气体光学特性的影响。 应用物理, 3, 18-25. doi: 10.12677/APP.2013.31005

 

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