Kovalev V I, Kotova N E, Harrison R G
Department of Physics, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
Opt Express. 2009 Sep 28;17(20):17317-23. doi: 10.1364/OE.17.017317.
An analytical solution of the basic coupled stimulated Brillouin scattering (SBS) equations is obtained in the Fourier domain, which describes the spectral evolution of the medium's response, and that of a Stokes pulse injected into this medium, when SBS is excited by non-monochromatic CW pump radiation. It shows that spectral broadening of pump radiation by any reasonable amount results in only minute increase of the spectral width of the resonant material's excitation in SBS, and cannot be effective in modifying the natural group index of the medium for the Stokes pulse.
在傅里叶域中得到了基本耦合受激布里渊散射（SBS）方程的解析解，该解描述了介质响应的光谱演化，以及当非单色连续波泵浦辐射激发SBS时注入该介质的斯托克斯脉冲的光谱演化。结果表明，泵浦辐射的光谱展宽到任何合理程度只会导致SBS中共振材料激发的光谱宽度有微小增加，并且不能有效地改变介质对斯托克斯脉冲的自然群折射率。
