克尔锁模钛宝石激光器中色散和能量对脉宽的作用(英文)  

Dispersion and Energy Effects on Pulsewidth in Kerr lens Modelocked Ti:sapphire Laser

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作  者:王乘[1] 张贵忠[1] 向望华[1] 李世枕 

机构地区:[1]天津大学精密仪器与光电子工程学院,天津300072

出  处:《光电子.激光》2000年第2期147-150,共4页Journal of Optoelectronics·Laser

基  金:Work funded by the Returned Scholars Foundation of the Ministry of Education

摘  要:通过用非线性薛定格方程处理光脉冲在钛宝石介质中的传播和独立计入四棱镜系统的色散 ,我们在自洽条件下对自锁模钛宝石激光器的脉冲性质进行了数值模拟计算。本工作的特点在于不断监视脉冲的演化过程并算到自洽为止 ,因而得到了稳定的脉冲及其宽度。结果表明 ,二阶色散补偿是必须的 ,而缩短介质长度比增大泵浦更易获得变换极限的脉冲。By employing the nonlinear Schrodinger equation (NLSE) to deal with pulse propagation through laser crystal and independently taking into account of 4 prism dispersion,we have successfully simulated the pulse duration properties in a self consistent scheme for a Ti:sapphire laser.Our simulation is distinguished from other algorithms by closely monitoring the evolution of pulse and getting a stabel and convergent pulse in the end.It is concluded that second order dispersion compensation is mandatory and shortening the length of the laser medium is much more effective than pumping it with higher power in producing transform limited pulses.

关 键 词:脉宽 能量 锁模 色散 钛宝石激光器 

分 类 号:TN248.1[电子电信—物理电子学]

 

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