High-quality coherent wavefronts are extremely useful in optical communications and lasers. Disorder is usually considered as a source of noise and deviation from ideal designs for generating high-quality beams in photonic devices. Here, we demonstrate that strong disorder can be exploited to obtain high-quality wavefronts thanks to the Anderson localization phenomenon. Our analysis on a transverse Anderson localizing optical fiber reveals that a considerable number of the guided modes have $M^2<2$ values. These high-quality modes are distributed across the transverse profile of the disordered fiber and can be excited without requiring sophisticated spatial light modulations at the input facet. The results show the potential of such fibers for novel applications in fiber lasers and nonlinear devices, where a high beam quality is desirable.

中文翻译：

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安德森本地化光纤中无序诱发的高质量波前

高质量的相干波阵面在光通信和激光器中非常有用。通常认为无序是噪声的来源，并且偏离了在光子器件中生成高质量光束的理想设计。在这里，我们证明了由于安德森本地化现象，可以利用强无序来获得高质量的波前。我们对安德森横向定位光纤的分析表明，相当数量的导模具有${\mathrm{中号}}^{\mathrm{2个}}<\mathrm{2个}$价值观。这些高质量模式分布在无序光纤的横向轮廓上，可以被激发而无需在输入面上进行复杂的空间光调制。结果表明，这种光纤在光纤激光器和非线性设备中的新应用中具有很高的潜力，在这些应用中，需要高光束质量。