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本文利用二次量子化方法和酉变换得到水分子伸缩振动的Hamiltonian算子,其中的系数优选后用来计算本征能量其结果与实验值相符。利用这个简单的Hamiltonian算子计算了在强激光场中水分子的多光子激发和能量吸收。
In this paper, the Hamiltonian operator of water molecules stretching vibration is obtained by means of quadratic quantization and unitary transformation. The coefficients of these Hamiltonian operators are used to calculate the intrinsic energy. The results are consistent with the experimental data. Using this simple Hamiltonian operator, the multiphoton excitation and energy absorption of water molecules in a strong laser field have been calculated.