Abstract

The interest in unipolar pulses in optics is related to the possibility of their efficient action on quantum objects. In this work, we study the interaction of a short rectangular unipolar pulse with a two-level resonant medium under conditions that the pulse duration is shorter than the relaxation times of the medium. It is paradoxical that the polarization and the population difference of the medium oscillate not at the Rabi frequency, but, rather, at a frequency that is proportional to the sum of the squared frequency of the resonant transition of the medium and the squared Rabi frequency of the pulse. This phenomenon is similar to the Stark effect, which consists of a shift of the transition frequencies of a medium in a constant external electric field. The possibility of generating radiation at frequencies that exceed the resonant transition frequency of the medium upon its excitation by a rectangular unipolar pulse is discussed.

中文翻译：

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矩形单极脉冲与两能级共振介质的相互作用

摘要

对光学中单极脉冲的关注与它们对量子物体有效作用的可能性有关。在这项工作中，我们研究了短矩形单极脉冲与两级谐振介质在脉冲持续时间短于介质的弛豫时间的条件下的相互作用。矛盾的是，介质的极化和种群差异不是以拉比频率振荡，而是以与介质共振跃迁的平方频率和拉曼频率的平方之和成比例的频率振荡。脉冲。这种现象类似于斯塔克效应，该效应由介质在恒定外部电场中的跃迁频率的偏移组成。