光电负反馈下1550nm垂直腔表面发射激光器的动力学特性

发布时间：2018-05-21 07:29

本文选题：非线性光学 + 半导体激光物理　；参考：《光子学报》2016年08期

【摘要】：基于激光输出的时间序列、功率谱以及相图,对1 550 nm垂直腔表面发射激光器(1 550 nmVCSELs)在光电负反馈作用下的动力学特性进行了研究.结果表明:固定偏置电流,在不同反馈强度下,光电负反馈1 550 nm VCSEL可呈现规则脉冲态、准周期态、混沌脉冲态等非线性动力学态;固定反馈强度,偏置电流取不同值时.1 550 nm-VCSEL也可呈现脉冲态、准周期态、混沌脉冲态等不同的非线性动力学状态.给出了1 550 nm VCSEL非线性动力学状态在偏置电流和反馈强度构成的参量空间分布.分析了激光器的动态演化路径,结果表明:在较小偏置电流和弱光电反馈下,激光器主要工作在稳态:随着偏置电流增加,激光器输出的动力学态通常随反馈强度的增加以规则脉冲态-准周期态-规则脉冲态的方式循环演化到混沌脉冲态;当偏置电流增加到一定值后,激光器输出的动力学态随反馈强度的增加主要以规则脉冲态准周期态混沌脉冲态的方式循环演化.
[Abstract]:Based on the time series, power spectrum and phase diagram of laser output, the dynamic characteristics of 1 550 nm vertical cavity surface emitting laser (1 550 nm VCSELs) under optoelectronic negative feedback are studied. The results show that at the fixed bias current, at different feedback intensities, the optoelectronic negative feedback 1 550nm VCSEL can present nonlinear dynamical states such as regular pulse state, quasi periodic state, chaotic pulse state, and fixed feedback intensity. At different values of bias current, 1.550 nm-VCSEL can also present different nonlinear dynamic states, such as pulse state, quasi-periodic state, chaotic pulse state, and so on. The parametric spatial distribution of the nonlinear dynamic state of 1 550nm VCSEL is given, which is composed of bias current and feedback intensity. The dynamic evolution path of the laser is analyzed. The results show that the laser mainly works in the steady state under the condition of small bias current and weak optoelectronic feedback: with the increase of bias current, The dynamic state of laser output usually evolves to chaotic pulse state in the form of regular pulse state, quasi periodic state and regular pulse state with the increase of feedback intensity, and when the bias current increases to a certain value, With the increase of the feedback intensity, the dynamic state of the laser output mainly evolves in the way of the regular pulse state quasi-periodic state chaotic pulse state.
【作者单位】：西南大学物理科学与技术学院;
【基金】：国家自然科学基金(Nos.61275116.61475127,61575163) 重庆市自然科学基金(No.cstc2016jcyjA0082) 西南大学中央高校基本科研业务费专项资金项目(No.XDJK2014C168)资助~~
【分类号】：TN248

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