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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Multifrequency Stimulated Raman Scattering on Rotational Transitions of Molecules
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Multifrequency Stimulated Raman Scattering on Rotational Transitions of Molecules

机译：多频刺激分子旋转过渡的拉曼散射

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摘要

The theory of multifrequency stimulated Raman scattering (SRS) of light on rotational transitions of molecules, which are simulated by a three-level quantum system, is developed. It is shown that the application of bichromatic pumping increases the scattered radiation spectrum width. The exact algebraic solution for the wave amplitudes is obtained in the simplest version of synchronous SRS on transitions with a negligibly low eigenfrequency. It is found that an increase in the ratio of the Raman transition frequency to the pump radiation frequency leads to predominance of the anti-Stokes scattering branch. The effect of wave asynchronism emerging due to linear and nonlinear dispersion of the medium as well as the phase difference of the pump waves on SRS is considered. All types of asynchronism narrow generated frequency spectrum and suppress the anti-Stokes scattering branch. Nonlinear dispersion ensures positive values of wave amplitudes due to phase jumps by during the propagation of waves in a medium.
机译：开发了由三级量子系统模拟的分子旋转过渡的旋转转变的多频刺激拉曼散射（SRS）。结果表明，双色泵送的应用增加了散射的辐射谱宽度。在具有可忽略的低特征频率的过渡的同步SRS的最简单版本中获得了波幅的确切代数解决方案。发现拉曼过渡频率与泵辐射频率的比率的增加导致防斯托克斯散射分支的主要突出。考虑了介质线性和非线性色散引起的波异步的影响以及SRS上的泵波的相位差。所有类型的异步异步窄生成的频谱，抑制了反斯托克斯散射分支。非线性色散确保由于在介质中的波的传播期间由于相位跳跃而导致波幅的正值。

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