光学学报, 2020, 40 (4): 0419001, 网络出版: 2020-02-11
基于注入锁定增强高次谐波的任意波形产生 下载: 1600次
Arbitrary Waveform Generation of Enhanced High-Order Harmonics Based on Injection Locking
非线性光学 非线性调制 注入锁定 任意波形产生 高阶近似 nonlinear optics nonlinear modulation injection-locking arbitrary waveform generation high-order approximate
摘要
提出一种基于注入锁定技术增强高次谐波的任意波形产生方案。通过注入锁定技术放大并增强高次和偶次谐波,将获得的高次谐波和非线性调制产生的第一和第三次谐波进行时域叠加,可合成高阶的三角波、矩形波。将注入锁定增强的偶次谐波和非线性调制产生的第一和第三次谐波进行时域叠加可合成高阶锯齿波和反锯齿波。通过实验,本文成功产生了频率为5 GHz的五阶三角波、五阶矩形波、三阶锯齿波和三阶反锯齿波。理论与实验结果表明:五阶三角波与矩形波的方均根误差比同时产生的三阶相同波形提升了10%~37%;可以通过增加注入锁定的支路数来获得更高阶近似的波形。
Abstract
In this paper, an arbitrary waveform generation scheme of enhanced high-order harmonics based on injection locking technology is proposed. In this scheme, a series of higher and even order harmonic is enlarged and improved by injection locking technology. The high-order rectangular and triangular waves can be obtained by time domain superimposing the high-order harmonics and the first and third harmonics generated by nonlinear modulation. Also, a high-order sawtooth wave and reversed sawtooth wave can be obtained by time domain synthesizing the even-order harmonics of injection locking enhancing and the first and third harmonics generated by nonlinear modulation. In the experiments, a fifth-order triangular wave, a fifth-order rectangular wave, a third-order sawtooth wave, and a third-order reversed sawtooth wave with frequency of 5 GHz were successfully generated. Hence, the theoretical and experimental results show that compared to that of the same third-order waveform that simultaneous generating, root mean square error of the fifth-order triangular wave and the rectangular wave increased by 10%--37%. Moreover, it is found that the higher-order approximation waveform can be obtained by increasing the number of injection locking branches.
彭海涛, 王菊, 马闯, 谢田元, 于洋, 方杰, 刘莉, 于晋龙. 基于注入锁定增强高次谐波的任意波形产生[J]. 光学学报, 2020, 40(4): 0419001. Haitao Peng, Ju Wang, Chuang Ma, Tianyuan Xie, Yang Yu, Jie Fang, Li Liu, Jinlong Yu. Arbitrary Waveform Generation of Enhanced High-Order Harmonics Based on Injection Locking[J]. Acta Optica Sinica, 2020, 40(4): 0419001.