During the last two decades, laser-induced white emission (LIWE) has been the subject of numerous studies. LIWE was generated when excited by a focused laser beam in a vacuum, resulting in a broadband emission that covers the entire visible and part of the near-infrared region. At the moment, LIWE has already found practical application, for example, in the production of hydrogen. Despite the progress made in understanding this phenomenon, the nature of LIWE still needs to be determined to find answers to many questions. This is due to the limited amount of experimental data provided to date. This paper focuses on the effect of Nd³⁺ concentrations and size of La_1–xNd_xAlO₃ nanorods on LIWE properties. It was found that La_1–xNd_xAlO₃ (x: 0, 0.05, 0.5, 1) nanorods are able to generate LIWE without a vacuum, which is a rare effect. To explain the result of this work, multiphoton ionization theory was proposed.

中文翻译：

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探索纳米棒直径对 La1–xNdxAlO3 中近红外激光诱导斯托克斯和反斯托克斯发射的影响

在过去的二十年中，激光诱导白光发射（LIWE）一直是众多研究的主题。 LIWE 是在真空中被聚焦激光束激发时产生的，产生覆盖整个可见光和部分近红外区域的宽带发射。目前，LIWE 已经找到了实际应用，例如在氢气生产中。尽管在理解这一现象方面取得了进展，但 LIWE 的本质仍然需要确定，才能找到许多问题的答案。这是由于迄今为止提供的实验数据有限。本文重点研究了 Nd ³⁺浓度和 La _{1– x} Nd _x AlO ₃纳米棒尺寸对 LIWE 性能的影响。研究发现La _{1– x} Nd _x AlO ₃ ( x : 0, 0.05, 0.5, 1) 纳米棒无需真空即可产生LIWE，这是一种罕见的效应。为了解释这项工作的结果，提出了多光子电离理论。