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众所周知，非简并回波混频可被用于高分辨率激光光谱学，以研究原子或分子能级结构和弛豫过程．我们曾用时间延迟Ｒａｍａｎ增强非简并四波混频光谱学方法测量振动的失相时间，尤其是将双频非简并四波混频方法用于超快调制光谱学，等等．Ｒｙｄｂｅｒｇ原子是原子物理学中的重?
It is well-known that non-degenerate echo mixing can be used in high-resolution laser spectroscopy to study the energy level structure and relaxation processes of atoms or molecules. We have time-delayed Raman enhanced non-degenerate four-wave mixing spectroscopy to measure the out-of-phase time of vibrations, especially using the dual-frequency non-degenerate four-wave mixing method for ultrafast modulation spectroscopy. Rydberg atom is the weight of atomic physics?