Kida Yuichiro, Imasaka Totaro
Opt Express. 2015 May 4;23(9):12373-81. doi: 10.1364/OE.23.012373.
The generation of intense subcycle laser pulses during the propagation of two-color femtosecond pulses in a gas medium is investigated theoretically and experimentally. Four-wave mixing induced by the laser pulses in a gas medium generates multi-octave laser radiation from the ultraviolet to the infrared, which forms stable subcycle laser pulses after a certain propagation distance in a gas medium with group-velocity dispersion. The intense subcycle laser pulses would allow the coherent control of the waveforms of soft-x-rays generated via high-harmonic generation.
对双色飞秒脉冲在气体介质中传播时产生高强度亚周期激光脉冲进行了理论和实验研究。激光脉冲在气体介质中诱导的四波混频产生从紫外到红外的多倍频程激光辐射，该辐射在具有群速度色散的气体介质中传播一定距离后形成稳定的亚周期激光脉冲。高强度亚周期激光脉冲将允许对通过高次谐波产生的软X射线波形进行相干控制。
