信号光谱宽特性对单频光纤放大器SBS阈值的影响

发布时间：2018-03-16 05:36

本文选题：激光器　切入点：光纤激光器　出处：《中国激光》2017年09期 　论文类型：期刊论文

【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1030.93nm、线宽为0.9GHz、平均功率为90W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]:Stimulated Brillouin scattering (SBS) effect is an important factor affecting the power of single-frequency narrow linewidth fiber laser amplifier. White noise is used as radio frequency signal source and phase modulation technique is used. A three-stage main oscillator power amplifier all-fiber laser system is designed and built. The relationship between the signal optical spectrum width and the SBS threshold of the fiber amplifier system is analyzed and studied. The amplitude of the white noise signal is changed by changing the amplitude of the white noise signal. The spectral width of the control signal is accurately controlled, and the narrow linewidth quasi-continuous laser output with a central wavelength of 1030.93nm, a linewidth of 0.9GHz and an average power of 90W is obtained. The corresponding beam quality factors in X direction and Y direction are 1.28 and 1.27 respectively. This study provides a reliable theoretical and experimental basis for the industrialization of high-power single-frequency narrow linewidth fiber lasers.
【作者单位】：南京邮电大学光电工程学院;南开大学光学信息技术科学教育部重点实验室;南京先进激光研究院先进全固态激光技术研发中心;
【基金】：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
【分类号】：TN248;TN722

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