关键词: 超短激光脉冲/
电离解离/
双色光场
English Abstract
Directional bond breaking of CO molecules by counter-rotating circularly polarized two-color laser fields
Lin Kang,Gong Xiao-Chun,
Song Qi-Ying,
Ji Qin-Ying,
Ma Jun-Yang,
Zhang Wen-Bin,
Lu Pei-Fen,
Zeng He-Ping,
Wu Jian
1.State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
Fund Project:Project supported by the Shanghai Sailing Program, China (Grant No. 16YF1402900).Received Date:26 September 2016
Accepted Date:04 November 2016
Published Online:05 November 2016
Abstract:We experimentally studied the dissociative single and double ionization of CO molecules by counter-rotating circularly polarized two-color (CRTC) laser fields. By coincidently measuring the electrons and the fragmented ions, trefoil asymmetric momentum distributions of C+ in the polarization plane were observed, which are mainly determined by the selective ionization of CO with asymmetric orbitals. The threefold pattern could rotate continuously in the two-dimensional space by finely tuning the relative phase of the CRTC fields, providing a new method to manipulate the directional bond breaking of molecules by strong laser fields.
Keywords: ultrashort laser pulse/
dissociative ionization/
two-color fields
