用于中性原子物质波光学的衍射镜

IF 3.1 3区 化学 Q2 Chemistry
Lee Yeong Kim, Do Won Kang, Sanghwan Park, Seongyeop Lim, Jangwoo Kim, Wieland Schöllkopf and Bum Suk Zhao
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引用次数: 0

摘要

原子和分子反射镜是利用中性粒子进行物质波光学研究的重要工具。由于原子与表面之间固有的短德布罗格利波长和强烈的相互作用,实现它们需要清洁和原子光滑的晶体表面、复杂的定制电磁场、纳米制造或粒子冷却。在这里,我们展示了氦原子在价格低廉、易于获得且坚固耐用的光栅上的反射。我们使用不同类型、不同周期的炽热光栅,研究光栅的微观和宏观特性如何影响反射镜的性能。周期为417纳米的全息光栅对He原子的反射率高达47%,这表明商用光栅可用作热能原子和分子的反射镜。我们还观察到 He2 和 He3 的反射,这意味着光栅也可以用作其他易碎粒子的反射镜,这些粒子在典型条件下不会从固体表面无损散射,如可陨原子或反氢原子。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Diffractive mirrors for neutral-atom matter-wave optics†

Diffractive mirrors for neutral-atom matter-wave optics†

Mirrors for atoms and molecules are essential tools for matter-wave optics with neutral particles. Their realization has required either a clean and atomically smooth crystal surface, sophisticated tailored electromagnetic fields, nanofabrication, or particle cooling because of the inherently short de Broglie wavelengths and strong interactions of atoms with surfaces. Here, we demonstrate reflection of He atoms from inexpensive, readily available, and robust gratings designed for light waves. Using different types of blazed gratings with different periods, we study how microscopic and macroscopic grating properties affect the mirror performance. A holographic grating with 417 nm period shows reflectivity up to 47% for He atoms, demonstrating that commercial gratings can serve as mirrors for thermal energy atoms and molecules. We also observe reflection of He2 and He3 which implies that the grating might also function as a mirror for other breakable particles that, under typical conditions, do not scatter nondestructively from a solid surface such as, e.g., metastable atoms or antihydrogen atoms.

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来源期刊
Faraday Discussions
Faraday Discussions CHEMISTRY, PHYSICAL-
CiteScore
4.90
自引率
0.00%
发文量
259
审稿时长
2.8 months
期刊介绍: Discussion summary and research papers from discussion meetings that focus on rapidly developing areas of physical chemistry and its interfaces
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