Energy Exchange between Femtosecond Laser Filaments in Air
Energy Exchange between Femtosecond Laser Filaments in Air
复制标题
空气中飞秒激光丝之间的能量交换
DOI：
10.1103/physrevlett.105.055003
复制
发表时间：
2010-07-29
影响因子：
8.6
通讯作者：
Mysyrowicz, A.
中科院分区：
文献类型：
--
作者：
Liu, Y.;Durand, M.;Mysyrowicz, A.
我们报道了飞秒激光细丝在空气中的能量交换。提出了一种在灯丝交叉处形成的行进等离子体光栅来解释能量传递。在这种移动等离子体光栅介导的机制中，激光能量从较低频率脉冲转移到其较高频率的伙伴，而在传统的克尔非线性介导的光栅中，能量转移以相反的方式发生。基于这一机制，我们证明了能量转移率高达50%的脉冲与几毫焦耳的能量。
We report on the energy exchange between femtosecond laser filaments in air. A traveling plasma grating formed at the intersection of the filaments is proposed to explain the energy transfer. In this moving plasma grating mediated mechanism the laser energy transfers from the lower frequency pulse to its higher frequency partner, while in a traditional Kerr nonlinearity mediated grating, energy transfer occurs in the opposite manner. Based on this mechanism, we demonstrate an energy transfer ratio as high as 50% for pulses with an energy of several millijoules.