论文标题
扭曲的Attosecond脉冲的角度分辨
Angle-Resolved Attosecond Streaking of Twisted Attosecond Pulses
论文作者
论文摘要
目前的工作着重于在扭曲的Attsond脉冲中通过能量和角度分辨的Attosend strake的轨道动量（OAM）的表征。发现由线性极化的扭曲脉冲产生的光电子光谱具有不同的OAM值表现出角度调制，而圆形极化的扭曲脉冲产生角度各向同性光谱。证明能量和角度分辨的条纹光谱对扭曲脉冲的OAM值敏感。此外，扭曲的泵脉冲和强红色探针脉冲的极化的不同组合对条纹谱的影响不同。携带扭曲的Attsond脉冲的OAM的表征开辟了探索螺旋光肌相互作用的可能性。
The present work focuses on the characterisation of the amount of orbital angular momentum (OAM) encoded in the twisted attosecond pulses via energy- and angle-resolved attosecond streaking in pump-probe setup. It is found that the photoelectron spectra generated by the linearly polarised twisted pulse with different OAM values exhibit angular modulations, whereas circularly polarised twisted pulse yields angular isotropic spectra. It is demonstrated that the energy- and angle-resolved streaking spectra are sensitive to the OAM values of the twisted pulse. Moreover, the different combinations of the polarisation of the twisted pump pulse and strong infrared probe pulse influence the streaking spectra differently. The characterisation of the OAM carrying twisted attosecond pulses opens up the possibility to explore helical light-matter interaction on attosecond timescale.
