The spectral properties of atoms localized in an optical dipole trap formed by femtosecond pulsed radiation are studied experimentally. It is shown that the shift of the absorption line of an atom due to the interaction of an atom with the field of localizing radiation coincides with the shift of the line of an atom localized in the field of cw laser radiation. Theoretical analysis shows that pulsed radiation with experimentally achievable average intensity and duration of a pulse makes it possible to implement an atom localization mode in which the line shift is absent.

中文翻译：

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飞秒脉冲光学偶极阱中of原子的光谱学

实验研究了飞秒脉冲辐射形成的光学偶极阱中的原子的光谱特性。结果表明，由于原子与局部辐射场的相互作用而导致的原子吸收线的偏移与位于连续激光辐射场中的原子的线的偏移相一致。理论分析表明，具有实验上可达到的平均强度和脉冲持续时间的脉冲辐射可以实现原子定位模式，其中不存在线偏移。