充氩气Kagome空芯光子晶体光纤中超连续光谱产生的动力学研究

Dynamics of supercontinuum generation in argon-filled Kagome-structured hollow-core photonic crystal fiber

利用飞秒激光在充氩气的Kagome结构空芯光子晶体光纤中产生了高亮度宽带的超连续光谱.通过改变填充气体的气压以及输入激光的单脉冲能量可以对产生的超连续光谱进行控制.利用中心波长980 nm的飞秒脉冲作为抽运获得了光谱范围覆盖340~1 550 nm的宽带超连续光谱.通过基于载波的单向脉冲传输方程研究了超短脉冲在充氩气的Kagome光纤中产生超连续光谱的动力学过程.

Bright supercontinuum was experimentally generated in an argon-filled hypocycloid-core Kagome fiber pumped by a femtosecond laser.The spectrum of the generated supercontinuum can be controlled by changing the gas pressure and input pulse energy.By use of a pump laser centered at 980 nm,a bright broadband supercontinuum ranging from 340 nm to 1 550 nm was generated.The dynamics of the supercontinuum generation in the argon-filled Kagome fiber was investigated using an accurate carrier-resolving unidirectional pulse propagation equation.