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Above Threshold Ionization Spectra of He in a Circularly Polarized Laser Field |
| CHEN Bao-zhen |
| Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875 |
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| Cite this article: |
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CHEN Bao-zhen 1998 Chin. Phys. Lett. 15 416-417 |
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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.
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| Keywords:
32.80.Rm. 32.80.Fb
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Published: 01 June 1998
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