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Quantum Electrodynamic Perspective on Multiphoton Ionization |
| CHEN Jing1,2;CHEN Shi-gang1;LIU Jie1 |
| 1Institute of Applied Physics and Computational Mathematics, Beijing 100088
2Graduate School of China Academy of Engineering Physics, P. O. Box 2101, Beijing 100088
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| Cite this article: |
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CHEN Jing, CHEN Shi-gang, LIU Jie 1999 Chin. Phys. Lett. 16 888-890 |
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Abstract A fully quantum nonperturbative method is developed to describe multiphoton ionization in intense fields. It is shown that, treating the radiation field with quantum electrodynamic(QED) theory enables u s to obtain the above-threshold ionization energy distribution spectrum in analytical form firstly. Moreover, in addition to the well-known semiclassical theory, the framework presented here, derived from a QED perspective, provides a new picture of the multiphoton ionization.
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| Keywords:
32.80.Rm
32.80.-t
03.70.+k
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Published: 01 December 1999
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| PACS: |
32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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32.80.-t
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(Photoionization and excitation)
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03.70.+k
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(Theory of quantized fields)
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