Abstract
The multiphoton excitation of NH3 in laser fields is discussed using the second quantization and unitary transformations. The stretch-vibration energy spectrum obtained from an optimized Hamiltonian is in good agreement with that of experiments. The changes in transition probabilities with the frequencies of laser fields and the time-dependent transition probabilities at a field intensity of 1.1×10-8 w/cm2 are presented. Finally, the energy absorption is calculated.
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Chang, J., Ding, S. L., Wyatt, R. E., Theory of multiphoton excitation of methane in intense laser fields,J. Chem. Phys., 1985, 83: 3244.
Ding, S. L., Pan, L. N., Deng, C. H., Multiphoton excitation of a water molecule in intense laser fields,Science in China, Ser. B, 1990, 33: 1425.
Herzberg, G.,Molecular Spectra and Molecular Structure, New York: D Van Nostrand, 1953.
Wilson, E. B., Decius, J. C., Cross, P. C.,Molecular Vibration, New York: McGraw-Hill, 1955.
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Project supported by the National Natural Science Foundation of China and the Natural Science Foundation of Shandong Province, China.
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Pan, L., Ding, S. & Deng, C. Multiphoton excitation of an ammonia molecule in laser fields. Sc. China Ser. B-Chem. 40, 583–589 (1997). https://doi.org/10.1007/BF02875476
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DOI: https://doi.org/10.1007/BF02875476