CO_(2)分子在飞秒强激光场中的光电离实验研究  

Experimental Study on Photoionization of CO_(2) Molecules in Femtosecond Intense Laser Field

作　　者：张科 李兰兰 李旺 余海军 郭大伟 ZHANG Ke;LI Lanlan;LI Wang;YU Haijun;GUO Dawei(School of Electronic Engineering,Huainan Normal University,Huainan 232038,China)

机构地区：[1]淮南师范学院电子工程学院,安徽淮南232038

出　　处：《太原师范学院学报（自然科学版）》2022年第4期70-75,81,共7页Journal of Taiyuan Normal University:Natural Science Edition

基　　金：安徽省高校优秀拔尖人才资助项目(gxyq2021210);大学物理实验教学团队(2021jxtd263);物理实验中心(2020sxzx49)。

摘　　要：利用真空腔体系统、超声脉冲分子束系统和直线式飞行时间质谱仪等实验装置,研究了线性三原子分子CO_(2)在波长800 nm,重复频率1 000 Hz、脉宽35 fs的飞秒强激光场中光电离行为.测量了CO_(2)分子随激光光场强度和激光偏振状态变化的飞行时间质谱.基于飞秒强激光场理论,从激光的偏振度效应、极化效应和光强依赖关系等方面,对CO_(2)分子在飞秒强激光场中光电离进行了分析.In this paper, the photoionization behavior of linear triatomic molecule CO_(2)in femtosecond intense laser field with wavelength of 800 nm, repetition rate of 1 000 Hz and pulse width of 35 fs have been studied by using experimental devices such as vacuum cavity system, ultrasonic pulsed molecular beam system and linear time-of-flight mass spectrometer.The time-of-flight mass spectrometry of CO_(2)molecules varying with laser light field intensity and laser polarization state was measured.Based on the theory of femtosecond intense laser field, the photoionization of CO_(2)molecule in femtosecond intense laser field is analyzed from the aspects about the laser polarization effect, laser ellipticity and the dependence of the laser intensity.

关 键 词：超声脉冲分子束 飞秒强激光场 光电离 飞行时间质谱 

分 类 号：O641[理学—物理化学]