压电与声光, 2022, 44 (1): 125, 网络出版: 2022-03-16  

新型主振荡器功率放大系统的研究

Study on a New Master Oscillator Power Amplification System
秦冲 1,2
作者单位
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
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LP01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。
Abstract
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 LP01 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.
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秦冲. 新型主振荡器功率放大系统的研究[J]. 压电与声光, 2022, 44(1): 125. QIN Chong. Study on a New Master Oscillator Power Amplification System[J]. Piezoelectrics & Acoustooptics, 2022, 44(1): 125.

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