增强光子雪崩

IF 18.4 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Sonal Mistry
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引用次数: 0

摘要

激发态离子与其相邻离子之间的能量交换——一个被称为交叉弛豫的过程——在驱动雪崩中起着核心作用。多个光子的吸收触发了链式反应和许多激发态的积累,导致光子雪崩。加强交叉弛豫路径可以增强这种非线性响应,并且局部晶体场的变化有望影响离子间能量传递的效率。Chen和他的同事们考虑了修饰镧掺杂上转换纳米粒子晶格的影响。他们从一种常用的构型——掺杂Tm3+ -的NaYF4开始,并用Lu3+代替Y3+。这导致纳米粒子的荧光显著增加,表明光学非线性增加。为了了解观察到的增强背后的机制,Chen和他的同事使用各种x射线光谱技术探测了晶体结构。结果表明,镥取代引起晶格收缩,加强了交叉弛豫途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Enhanced photon avalanche

Enhanced photon avalanche
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来源期刊
Nature Physics
Nature Physics 物理-物理:综合
CiteScore
30.40
自引率
2.00%
发文量
349
审稿时长
4-8 weeks
期刊介绍: Nature Physics is dedicated to publishing top-tier original research in physics with a fair and rigorous review process. It provides high visibility and access to a broad readership, maintaining high standards in copy editing and production, ensuring rapid publication, and maintaining independence from academic societies and other vested interests. The journal presents two main research paper formats: Letters and Articles. Alongside primary research, Nature Physics serves as a central source for valuable information within the physics community through Review Articles, News & Views, Research Highlights covering crucial developments across the physics literature, Commentaries, Book Reviews, and Correspondence.
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