基于主动锁模控制的激光谐波研究  

Study of laser harmonic based on active mode- locked control

作　　者：赵峰 

机构地区：[1]许昌广播电视大学,河南许昌461000

出　　处：《激光与红外》2013年第12期1359-1362,共4页Laser & Infrared

摘　　要：介绍一种采用主动锁模控制产生超短激光脉冲序列的方法。首先通过基于主动锁模激光系统的参量自治微分方程思想,导出了系统出现稳定条件时参数设置方法。然后利用铌酸锂的非线性,展开成贝赛尔系数的函数级数,载频与边频数差为调制频率的整数倍,最后产生高重复频率超短光脉冲,得到高阶锁模脉冲,实验结果表明:其通过调节调制器的调制参数来控制谐振腔中的模式损耗,在调制频率为1GHz量级的情况下,可获得重复频率10GHz的超短光脉冲序列,有啁啾时脉冲时域形状是很好的高斯型,没有出现明显畸变。An active mode- locked control method is presented. Firstly based on the parametric autonomous differential equation of actively mode- locked laser,parameter setting method is derived when the system is stable. Then using lithium niobate＇s nonlinear effect,a series of functions with Bessel coefficients are obtained. The difference of carrier frequency and side frequency is integral mutiple of the modulation frequency. Finally ultra- short laser pulses with high repetition rate and high order mode- locking are generated. The experiment results show that： the mode loss can be controlled by adjusting the modulator＇s parameters,with 1GHz of modulation frequency,10GHz repetition frequency ultra- short laser pulse sequence are obtained. The chirped pulse shape is a good Gauss type.

关 键 词：再生锁模 相位差 贝赛尔系数 

分 类 号：TN248.1[电子电信—物理电子学]