Abstract

The radiation of a two-level resonant medium that is placed into a cavity and is excited by a periodically phase modulated laser pulse is studied theoretically. The radiation is analyzed based on the analytical and numerical solutions of the system of Maxwell–Bloch equations under conditions of a strong coupling between the field and the matter. Under these conditions, this system is similar to a polariton laser. The excitation efficiency of a polariton laser by a phase-modulated radiation pulse is shown to be high compared to a pulse without phase modulation of the carrier frequency. It is shown that the main reason for the efficient excitation of polariton modes in the medium is the appearance of difference combination parametric resonance. The obtained results open up new possibilities for the excitation of radiation of polariton lasers by low-power frequency-modulated pump laser radiation.

中文翻译：

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在场与物质之间强耦合的情况下，周期性调相激光激发的共振介质的辐射

摘要

理论上研究了置于谐振腔中并由周期性相位调制的激光脉冲激发的二级共振介质的辐射。在场与物质之间存在强耦合的条件下，根据Maxwell-Bloch方程组的解析解和数值解对辐射进行了分析。在这些条件下，该系统类似于极化子激光器。与没有对载波频率进行相位调制的脉冲相比，由相位调制的辐射脉冲引起的极化子激光器的激发效率显示出较高的效率。结果表明，在介质中有效激发极化子模的主要原因是差分组合参数共振的出现。