A polarization-independent high-precision measurement method for ultra-narrow laser linewidth

Liu Yi; Qiu Shuofeng; Liu Bo; Lin Lie

doi:10.13756/j.gtxyj.2013.03.003

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A polarization-independent high-precision measurement method for ultra-narrow laser linewidth

- A polarization-independent high-precision measurement method for ultra-narrow laser linewidth
- Study on Optical communication Issue 3, Pages: 45-48(2013)
- 作者机构：
  
  南开大学信息技术科学学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2013.03.003
  CLC： TN248
- Published：2013，
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[1]刘毅,邱硕丰,刘波,林列.一种偏振无关的高精度超窄激光线宽测量方法[J].光通信研究,2013(03):45-48.

Liu Yi, Qiu Shuofeng, Liu Bo, et al. A polarization-independent high-precision measurement method for ultra-narrow laser linewidth. [J]. (3):45-48(2013)
[1]刘毅,邱硕丰,刘波,林列.一种偏振无关的高精度超窄激光线宽测量方法[J].光通信研究,2013(03):45-48. DOI： 10.13756/j.gtxyj.2013.03.003.

Liu Yi, Qiu Shuofeng, Liu Bo, et al. A polarization-independent high-precision measurement method for ultra-narrow laser linewidth. [J]. (3):45-48(2013) DOI： 10.13756/j.gtxyj.2013.03.003.

摘要

介绍了一种偏振无关的DSHI（延时自外差法）

其光路系统是基于FRM（法拉第旋转镜）的Michelson干涉仪

并对其激光线宽测量原理和偏振无关的特性进行了理论分析。在此基础上分别对传统的M-Z（马赫-曾徳）型DSHI和偏振无关的Michelson型DSHI进行了偏振态稳定性测试和超窄（4.5kHz）激光线宽测量比较

结果表明

具有高偏振态稳定性的Michelson型DSHI对激光线宽的测量精度更高

同时

用该高精度的Michelson型DSHI在理想的精度范围内成功完成了对另一台1.7kHz超窄半导体激光器线宽的测量。

Abstract

A polarization-independent Delayed Self-Heterodyne Interferometer（DSHI） is introduced

the optical system of which is a Faraday Rotator Mirror（FRM）-based Michelson interferometer

and its laser linewidth measurement principle and polarization-independent characteristics theoretically analyzed.On this basis

the polarization state stability measurement for the traditional Mach-Zehnder（M-Z） DSHI and the polarization-independent Michelson DSHI are performed respectively and compared with that for the ultra-narrow（4.5 kHz） laser linewidth.The results indicate that the Michelson DSHI with high polarization state stability has a higher accuracy in laser linewidth measurement.Furthermore

by using this type of DSHI

the linewidth measurement for another ultra-narrow semiconductor laser with a linewith of 1.7 kHz is implemented in an ideal range of accuracy.

关键词

线宽测量迈克尔逊干涉仪法拉第旋转镜延时自外差法

Keywords

linewidth measurementMichelson interferometerFRMDSHI

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College of Electronic Information and Optical Engineering,Nankai University

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