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引用次数: 0
摘要
我们报告了通过空间分辨阴极荧光光谱法对维持法布里-珀罗共振的矩形全介质 Ge 纳米天线进行的实验研究。空间分辨率和光谱分辨率的结合使我们能够直接对纳米天线内部光学态局部密度的驻波模式进行成像，这就是之前文献中报道的相同结构的共振普赛尔对整体发射增强的贡献。我们的研究结果证实，Ge 纳米结构的发射特性可以通过对局部光态密度的工程设计进行有效调整，而阴极荧光则为实验解决发射特性的这种调制问题提供了宝贵的信息。
Germanium Fabry-Perot nanoresonators investigated by cathodoluminescence spectroscopy
We report on the experimental investigation, by means of spatially-resolved cathodoluminescence spectroscopy, of rectangular all-dielectric Ge nanoantennas sustaining Fabry-Perot resonances. The combination of spatial and spectral resolution allows us to directly image the standing-wave pattern of the local density of optical states inside the nanoantennas, which is the fingerprint of the resonant Purcell contribution to the overall emission enhancement previously reported in the literature for the same structures. Our results confirm that the emission properties of Ge nanostructures can be effectively tuned by engineering the local density of optical states and that cathodoluminescence provides valuable information to experimentally address such modulation in their emission properties.
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Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry.
Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research.
The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics.
The journal covers both fundamental and applied topics, including but not limited to:
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Nonlinear optical phenomena
Optical materials
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Nano and metamaterials
Modern photonics technology
Optical engineering, design and instrumentation
Optical applications in bio-physics and medicine
Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage
The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.
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