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arXiv 1108.0236physics.opticsnlin.AO
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随机Laser模的固有随机线性化

Inherent Stochastic Linearization of Random Laser Modes

Jonathan Andreasen, Hui Cao

摘要:

弱散射随机激光器表现出空间重叠的激光模式,并可以通过增益饱和强烈相互作用。因此,强的低阈值激光模式可以抑制高阈值模式中的激光。我们数值研究这种强非线性现象的固有噪声的影响。噪声在阈值以下产生激光发射,并抑制阈值以上的显著非线性行为。结果是随机激光模式的线性化,并且当噪声克服空间烧孔时是可能的。结果表明,增益介质的噪声特性的控制可能会促进或抑制某些模式的激光在多模制度。

英文摘要:

Weakly scattering random lasers exhibit lasing modes that spatially overlap and can interact strongly via gain saturation. Consequently, lasing in high-threshold modes may be suppressed by strong low-threshold lasing modes. We numerically examine the effect of inherent noise on this strong nonlinear phenomenon. Noise generates emission below the lasing threshold and restrains the dramatic nonlinear behavior above threshold. The result is a linearization of random laser modes and is possible when noise overcomes spatial hole burning. Results suggest that control over the noise properties of the gain medium may facilitate or inhibit certain modes to lase in the multimode regime.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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