Abstract： A new analytic model for the above threshold ionization spectrum of He in a circularly polarized laser field is proposed. The experimental spectrum obtained by Mohideen et al. can be quite well described by this model. The spectra predicted by our model agree with experiment better than those of Reiss when the spatiotemporal profile of the laser pulse is taken into account and better than those of the Keldysh-Faisal-Reiss theory when the profile is not taken into account. At the same time, we find that the experimental value of the peak laser intensity was overstated by a factor of about 5. This result supports the previous similar claim by Reiss.
CHEN Bao-zhen. Above Threshold Ionization Spectra of He in a Circularly Polarized Laser Field[J]. 中国物理快报, 1998, 15(6): 416-417.
CHEN Bao-zhen. Above Threshold Ionization Spectra of He in a Circularly Polarized Laser Field. Chin. Phys. Lett., 1998, 15(6): 416-417.
1998, Vol. 15 
