量子光学学报, 2017, 23 (4): 350, 网络出版: 2017-12-25  

基于原子-腔耦合系统下线宽压窄内腔四波混频信号的产生

Generation of Intracavity Four Wave Mixing Signal with Linewidth Narrowing based on Atomic-cavity System
作者单位
山西大学 物理电子工程学院,山西 太原 030006
摘要
本文实验研究了基于原子-腔耦合系统下的内腔四波混频效应。当一束驻波耦合场作用于该复合系统时,实验发现在原子共振频率中心,产生的反射波混频信号无法在腔内形成共振,而当耦合光频率偏离原子共振频率中心时,反射信号能在腔内共振,从而产生线宽压窄的共振输出;进一步实验研究了不同耦合光频率失谐下,腔模失谐对内腔四波混频效率的影响。理论上,基于内腔介质在驻波耦合场驱动下的吸收特性及耦合光泵浦引起的强吸收效应对实验现象进行了定性的分析。
Abstract
We present the experimental study of the intracavity four-wave mixing (FWM) process based on a combined atomic-cavity system,which is driven by a standing-wave coupling field.On the basis of intracavity electromagnetically induced transparency (EIT),we further find that the reflected intracavity FWM signal cannot be resonated at the center of atomic resonance,but at the single photon detuning,where the linewidth can be efficiently narrowed.Qualitatively,combining the susceptibility properties of the intracavity hot atoms and the strong absorption effect induced by the optical pumping effect of the coupling field,the physical mechanism for the line width narrowing of the intracavity FWM signal is further discussed.This work enriches the applicable range of all-optical switching and can be useful in information computation and multichannel tunable all-optical switching and routing devices.
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车少娜, 韩宇宏, 卢越, 周海涛. 基于原子-腔耦合系统下线宽压窄内腔四波混频信号的产生[J]. 量子光学学报, 2017, 23(4): 350. CHE Shao-na, HAN Yu-hong, LU Yue, ZHOU Hai-tao. Generation of Intracavity Four Wave Mixing Signal with Linewidth Narrowing based on Atomic-cavity System[J]. Acta Sinica Quantum Optica, 2017, 23(4): 350.

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