【作者】 白丽华； 侯路强； 崔婷婷； 刘宇恒； 王燕； 阎晓娜；

【Author】 BAI Li-hua;HOU Lu-qiang;CUI Ting-ting;LIU Yu-heng;WANG Yan;YAN Xiao-na;Department of Physics,Shanghai University;

【机构】 上海大学物理系；

【摘要】 在量子电动力学框架下,采用全量子非微扰散射理论,研究了超快强激光场中离子的光离解。发现在保持周期数与载波-包络相位不变时,对相同的阈上离解峰,当用频率为γ倍,强度为γ~3倍的激光激发结合能为γ倍的离子时,光电子的角分布不变,γ为任意正实数。这一研究验证了周期量级超短激光脉冲中光电离的标度规律。更多还原

【Abstract】 Under the frame of quantum electrodynamics,by using a nonperturbative quantum scattering theory,photodetachment of ions in ultrafast strong laser fields was investigated.It was found that for the same above-detachment peaks,with the cycle number and carrier-envelope phase constant,when ions withγ times of binding energy were irradiated by γ times of frequency and γ~3 times of laser intensity,angular distributions of photoelectrons didn’t change,where γ was arbitrary positive real number.The results verifies the scaling law of photoionization in few-cycle laser pulses.更多还原