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信号光谱宽特性对单频光纤放大器SBS阈值的影响

Influence of Signal Spectral Width Characteristic on SBS Threshold of Single Frequency Fiber Amplifier

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摘要

受激布里渊散射(SBS)效应是影响单频窄线宽光纤激光放大器功率提高的重要因素。以白噪声作为射频信号源, 采用相位调制技术, 设计并搭建了一套三级主振荡功率放大全光纤激光系统。分析和研究了信号光频谱宽度与光纤放大器系统SBS阈值之间的关系, 通过改变白噪声信号的幅值, 实现精确控制信号光谱宽, 获得了中心波长为1030.93 nm、线宽为0.9 GHz、平均功率为90 W的窄线宽准连续激光输出, 相应的X方向与Y方向的光束质量因子分别为1.28和1.27。该研究为实现高功率单频窄线宽光纤激光器的产业化提供了可靠的理论和实验基础。

Abstract

The stimulated Brillouin scattering (SBS) effect is an important factor affecting the power boost of single frequency narrow line width fiber laser amplifiers. Utilizing white noise as the radio frequency signal source, an all fiber laser system with three stage master oscillator power amplifier is designed and built by phase modulation technique. The relationship between the spectral widths of the signal light and the SBS thresholds of the fiber amplifier system is analyzed and studied. By changing the amplitudes of the white noise signal, the spectral widths of the signal can be accurately controlled, and the narrow line width quasi continuous laser output with a central wavelength of 1030.93 nm, a line width of 0.9 GHz and an average power of 90 W is obtained. The corresponding X direction and Y direction of the beam quality factors are 1.28 and 1.27, respectively. This research provides a reliable theoretical and experimental basis for the industrialization of high power single frequency narrow line width fiber lasers.

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中图分类号:TN248

DOI:10.3788/cjl201744.0901009

所属栏目:激光物理

基金项目:江苏省自然科学基金(BK2016147)、江苏省科技支撑计划(BE2014001-1)、南京邮电大学国自基金孵化基金(NY215143)、光学信息技术科学教育部重点实验室(南开大学)开放基金资助项目

收稿日期:2017-05-08

修改稿日期:2017-05-12

网络出版日期:--

作者单位    点击查看

杨磊:南京邮电大学光电工程学院, 江苏 南京 210023
郑加金:南京邮电大学光电工程学院, 江苏 南京 210023南开大学光学信息技术科学教育部重点实验室, 天津, 300071
郝丽云:南京先进激光研究院先进全固态激光技术研发中心, 江苏 南京 210038
周军:南京先进激光研究院先进全固态激光技术研发中心, 江苏 南京 210038
韦玮:南京邮电大学光电工程学院, 江苏 南京 210023

联系人作者:杨磊(18705192007@163.com)

备注:杨磊(1991-), 男, 硕士研究生, 主要从事单频窄线宽光纤激光器等方面的研究。

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引用该论文

Yang Lei,Zheng Jiajin,Hao Liyun,Zhou Jun,Wei Wei. Influence of Signal Spectral Width Characteristic on SBS Threshold of Single Frequency Fiber Amplifier[J]. Chinese Journal of Lasers, 2017, 44(9): 0901009

杨磊,郑加金,郝丽云,周军,韦玮. 信号光谱宽特性对单频光纤放大器SBS阈值的影响[J]. 中国激光, 2017, 44(9): 0901009

被引情况

【1】郑贺斐,李晶,冯克明,王文明,高连山. 被动型氢原子钟单频调制的鉴频特性研究. 中国激光, 2018, 45(3): 311001--1

【2】陈晓龙,楼风光,何宇,王孟,徐中巍,郭晓晨,叶韧,张磊,于春雷,胡丽丽,何兵,周军. 高效率全国产化10 kW光纤激光器. 光学学报, 2019, 39(3): 336001--1

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