Near-Field Investigation of Luminescent Hyperuniform Disordered Materials
Near-Field Investigation of Luminescent Hyperuniform Disordered Materials
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DOI：
10.1002/adom.202102565
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发表时间：
2022-02-27
影响因子：
9
通讯作者：
Gurioli, Massimo
中科院分区：
文献类型：
--
作者：
Granchi, Nicoletta;Spalding, Richard;Gurioli, Massimo
在过去的三十年里，无序光子纳米结构引起了人们极大的兴趣，这不仅是因为光在随机介质中传输的迷人和复杂的物理，而且是因为它在许多有趣的应用中具有特殊的功能。最近，通过利用散射体结构中的长程关联的作用，人们对介电无序系统的兴趣得到了新的输入。超均匀光子材料具有光子晶体和随机系统的共同特征，构成了光传输的原型系统，由于光子带隙的存在，光的传输可以从扩散传输到光局域化为主。本文结合平板光子学中的超均匀无序(HUD)设计，利用嵌入的量子点作为HUD共振的馈电，以及在光学范围内具有亚波长分辨率的近场高光谱成像，来探索从局域化到扩散输运的转变。理论和实验表明，光子平显系统支持从强局域模到扩展模的各种共振。结果表明，产生了高Q/V的类Anderson模，占用空间小，本质上可重现，对制造诱导的无序具有弹性，为量子应用的新型光子平台铺平了道路。
Disordered photonic nanostructures have attracted tremendous interest in the past three decades, not only due to the fascinating and complex physics of light transport in random media, but also for peculiar functionalities in a wealth of interesting applications. Recently, the interest in dielectric disordered systems has received new inputs by exploiting the role of long-range correlation within scatterer configurations. Hyperuniform photonic materials, that share features of photonic crystals and random systems, constitute the archetype of systems where light transport can be tailored from diffusive transport to a regime dominated by light localization due to the presence of photonic band gap. Here, advantage is taken of the combination of the hyperuniform disordered (HuD) design in slab photonics, the use of embedded quantum dots for feeding the HuD resonances, and near-field hyperspectral imaging with sub-wavelength resolution in the optical range to explore the transition from localization to diffusive transport. It is shown, theoretically and experimentally, that photonic HuD systems support resonances ranging from strongly localized modes to extended modes. It is demonstrated that Anderson-like modes with high Q/V are created, with small footprint, intrinsically reproducible and resilient to fabrication-induced disorder, paving the way for a novel photonic platform for quantum applications.