The effect of vacuum level on laser induced white emission (LIWE) of graphene foam is investigated. The results are compared with the electric incandescence of tungsten wire. The increase in pressure inside the dynamic vacuum chamber reduces the emission intensity of LIWE and has no effect on the emission of the electrically driven tungsten wire. The same dependency was observed in the case of field emission (FE) of carbon cathodes. The analogy confirms that white emission and FE are coincident processes occurring during laser excitation of graphene foam.

中文翻译：

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真空度对石墨烯泡沫激光诱导白光发射的影响

研究了真空度对石墨烯泡沫激光诱导白光发射 (LIWE) 的影响。将结果与钨丝的电白炽相比较。动态真空室内压力的增加降低了LIWE的发射强度，对电驱动钨丝的发射没有影响。在碳阴极的场发射 (FE) 的情况下观察到相同的依赖性。该类比证实了白光发射和 FE 是在石墨烯泡沫的激光激发过程中发生的重合过程。