Chen Wenxiang, Chen Guanglong, Kim Dong Eon
Department of Physics, University of Science and Technology of China, Hefei 230026, China.
Opt Express. 2011 Oct 10;19(21):20610-5. doi: 10.1364/OE.19.020610.
For the investigation of various ultrafast electron dynamics, an isolated attosecond pulse in a broad spectral range is necessary. The generation of isolated attosecond pulses demands the manipulation of the electric field of a laser. We propose a two-color field scheme for generating an isolated attosecond pulse in the water-window region. Two-color fields are generated by mixing two equally-strong pulsed color fields. The investigation shows that an isolated attosecond pulse with a photon energy of near 500 eV and a pulse duration of 125 - 188 attoseconds can be generated using 10 - 15 fs FWHM laser fields.
为了研究各种超快电子动力学，需要在宽光谱范围内产生孤立的阿秒脉冲。产生孤立阿秒脉冲需要对激光电场进行操控。我们提出了一种双色场方案，用于在水窗区域产生孤立阿秒脉冲。双色场通过混合两个等强度的脉冲色场产生。研究表明，使用半高宽为10 - 15飞秒的激光场，可以产生光子能量接近500电子伏特、脉冲持续时间为125 - 188阿秒的孤立阿秒脉冲。
