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本文从掺杂多模石英光纤中同时记录到六对斯托克斯-反斯托克斯谱线,并在540—640nm的光谱范围内获得了受激四光子混频和受激喇曼散射联合产生的连续光谱带。在比较20m和200m光纤不同光谱特征的基础上,详细分析了受激四光子混频和受激喇曼散射谱线间的竞争和转化过程。Six pairs of Stokes-anti-Stokes lines of stimulated four photon mixing in a multimode fiber with GeO2+P2O5 doped silica core are simultaneously recorded. A continuum band generated jointly by SFPM and stimulated Raman scattering is obtained in the spectral range 540-640 nm. On the basis of two different experiment results for 20 m and 200 m fiber, the mechanism of competition and transformation between SFPM and SRS are analyzed in some detail.
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