首页|基于相位调制的非互易反射光放大动力学调控

基于相位调制的非互易反射光放大动力学调控

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基于光学非互易性的新型光子器件是信息处理的关键,由于信息在传递的过程中很容易减弱,因此如何放大光信号是该领域的研究热点之一。本文提出一种简单的方案实现了非互易光放大。该方案首先利用一个强耦合场和一个微波场控制一个弱探测场构成三能级 V 模型相干增益原子系统,使探测光信号在透明窗口处能够被放大;再通过控制耦合场强度随位置变化破坏极化率空间对称性,使得探测光从介质两侧入射的反射率不再互易,进而得到放大的非互易反射;最后,通过调制激光场之间相对相位来探究其非互易反射带放大的范围。数值结果显示,相对相位Φ=0,π 和 3π/2 时,只有一个非互易频率域的反射带被放大;而当 Φ=π/2 时,出现两个频率域内放大的非互易反射带,放大范围为1。25~2。75倍。可见,该系统能够实现非互易反射光放大的动力学调控。
Dynamical manipulation of non-reciprocal reflected light amplification based on phase modulation
The development of new photonic devices based on optical non-reciprocity is crucial for information processing.As information tends to be weakened during transmission,achieving amplified optical signals is a major focus of scientific research in this field.This paper proposes a simple regime to achieve amplified non-reciprocal reflection.Firstly,a strong coupling field and a microwave field are used to control a weak probe field to form a three-level coherent atomic system,enabling the detection light signal to be amplified at the transparent window.Then,the symmetry of probe susceptibility is broken utilizing the linear variation of coupling field,leading to the realization of non-reciprocal light reflection amplification.Finally,the amplification range of non-reciprocal reflection bands is modulated by adjusting the relative phase between laser fields.The numerical results demonstrate that in the nonreciprocal frequency domain,when the relative phase is Φ=0,π,and 3π/2,only one reflection band is amplified.However,when the relative phase reaches Φ=π/2,two non-reciprocal reflection bands are amplified simultaneously with a magnification range of 1.25-1.75 times.It is shown that the proposed regime can achieve dynamic manipulation of non-reciprocal reflection.

quantum opticsoptical non-reciprocityphase modulationreflected light amplificationdynamical manipulation

裴笑山、李观荣、张焓笑、杨红

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海南师范大学物理与电子工程学院,海南 海口 571158

量子光学 光学非互易 相位调制 反射光放大 动力学调控

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金海南省自然科学基金海南省自然科学基金海南省自然科学基金海南省院士创新平台

12204137121263141212635111861031122QN302121RC5392019RC190YSPTZX202215

2024

量子电子学报
中国光学学会基础光学专业委员会 中国科学院合肥物质科学研究院

量子电子学报

CSTPCD北大核心
影响因子:0.67
ISSN:1007-5461
年,卷(期):2024.41(4)
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