Linewidth Sharpening in Optical Frequency Combs via a Gain Switched Semiconductor Laser With External Optical Feedback

Linewidth Sharpening in Optical Frequency Combs via a Gain Switched Semiconductor Laser With External Optical Feedback
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通过具有外部光学反馈的增益开关半导体激光器来锐化光学频率梳中的线宽

DOI:
10.1109/jlt.2020.3026722
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发表时间:
2021-01
影响因子:
4.7
通讯作者:
Nigel Joseph Copner
Nigel Joseph Copner
中科院分区:
工程技术2区
文献类型:
--
作者:
Yuanlong Fan;Kang Li;Pu Li;Bethan Copner;Nigel Joseph Copner

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本文提出了一种新的光频梳产生器方案,它在外部光反馈的作用下实现了增益开关半导体激光器。数值结果表明,通过适当选择基本系统参数(即,反馈耦合分数、激光器偏置电流和外腔长度),由GSSL产生的OFC中的线宽可以显著减小到自由运行连续波(CW)SL的线宽以下。这种显着的线宽减少可以描述一个简单的解析表达式在这篇文章中被发现是在良好的协议与数值计算结果。
In this article, we propose a novel scheme for an optical frequency comb (OFC) generator which implements a gain switched (GS) semiconductor laser (SL) in the presence of external optical feedback (EOF). Numerical results demonstrate that with appropriate choices of the basic system parameters (i.e., the feedback coupling fraction, the laser bias current and the external cavity length), the linewidths in the OFCs generated by the GS SL with EOF can be significantly reduced below that of the free running continuous wave (CW) SL. Such a significant linewidth reduction can be described by a simple analytic expression presented in this article which is found to be in good agreement with the numerical results.
DOI: 10.1049/ip-opt:19949917
发表时间: 1994-04
期刊: --
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