Relaying and spatial filtering on beam propagation are required in order to overcome self-focusing damage.

为了克服自聚焦造成的破坏要求在光束传播中采用中继成像和空间滤波。

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Photorefractive (PR) spatial solitons form when the self-focusing of a light beam inside the PR material exactly balances the diffraction of the beam.

光折变空间光孤子是指当光折变材料的自聚焦效应与光束的衍射发散作用相平衡时，在介质内无衍射向前传播的光束。

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