新型主振荡器功率放大系统的研究  

Study on a New Master Oscillator Power Amplification System

作　　者：秦冲 QIN Chong(College of Applied Engineering,Henan University of Science and Technology,Sanmenxia 472000,China;Automotive College,Sanmenxia Polytechnic,Sanmenxia 472000,China)

机构地区：[1]河南科技大学应用工程学院,河南三门峡472000 [2]三门峡职业技术学院汽车学院,河南三门峡472000

出　　处：《压电与声光》2022年第1期125-129,共5页Piezoelectrics & Acoustooptics

基　　金：2021年度河南省高等学校重点科研基金资助项目(21B460009)。

摘　　要：该文设计了一种基于液晶聚合物(LCP)的主振荡器功率放大(MOPA)系统,整个系统在结构上划分为电光强度调制器、窄线宽连续种子源等部分。在具体设计过程中可以实现对纳秒脉冲信号的转换,继而得到对应的拉盖尔-高斯光,该过程采用的核心方法是空间相位转换法,最终得到了20.1 W的LP_(01)模输出,并且保持了较高的稳定性。另外通过LCP涡旋波片得到了高质量的径向偏振光输出,重复频率与功率均值分别为10 kHz、19.5 W,可以达到极高的转换效率和模式纯度分别为97%、88.5%,在满足纯度要求的同时能够达到较高的功率,显示出广阔的应用前景。In this study,a master oscillator power amplifier(MOPA)system based on LCP is designed.The whole system is divided into several parts,including electro-optic intensity modulator,narrow linewidth continuous seed source and so on.In the specific design process,the nanosecond pulse signal can be converted,and then the corresponding Laguerre Gaussian light can be obtained.The core method used in this process is the spatial phase conversion method.Finally,the LP_(01) mode output of 20.1 W is obtained,and high stability is maintained.In addition,high quality radial polarized light output is obtained through LCP vortex wave plate.The repetition frequency and average power are 10 kHz and 19.5 W,respectively,and very high conversion efficiency and mode purity of 97%and 88.5%respectively are obtained.Therefore,it can achieve high power while meeting the purity requirements,showing broad application prospects.

关 键 词：绝光纤激光器 径向偏振光 主控振荡器的功率放大器 空间相位转换 高功率 高纯度 

分 类 号：TN248[电子电信—物理电子学]