Chinese Optics Letters, 2016, 14 (11): 110201, Published Online: Aug. 2, 2018
Control of molecular excitation during the plasma generation of a femtosecond laser pulse Download: 1480次
020.2649 Strong field laser physics 020.2070 Effects of collisions 300.6365 Spectroscopy, laser induced breakdown
Abstract
From a classical dynamic simulation, we find the kinetic energy of the electrons generated during laser plasma generation depends on the laser polarization and intensity. The electron kinetic energy reaches its maximum with a fixed laser intensity for circularly polarized laser pulse. The fluorescence spectra at 380.4 nm from N 2 and 391.3 nm from N 2 + are measured; these are generated by both the direct excitation and electron collision excitation. The electron collision excitation is determined by the electron energy and reaches the maximal with a circularly polarized pulse.
Quanjun Wang, Yanghua Zhang, Zhenhao Wang, Jingjie Ding, Zuoye Liu, Bitao Hu. Control of molecular excitation during the plasma generation of a femtosecond laser pulse[J]. Chinese Optics Letters, 2016, 14(11): 110201.