Periodic Nanohole Arrays with Enhanced Lasing and Spontaneous Emissions for Low-Cost Plasmonic Devices
Periodic Nanohole Arrays with Enhanced Lasing and Spontaneous Emissions for Low-Cost Plasmonic Devices
复制标题
用于低成本等离子器件的具有增强激光和自发发射功能的周期性纳米孔阵列
DOI：
10.1021/acsanm.1c03796
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发表时间：
2022
影响因子：
5.9
通讯作者：
Hoang, Thang B.
中科院分区：
文献类型：
--
作者：
Krause, Bryson;Pham, Minh T.;Luong, Hoang M.;Nguyen, Tho D.;Hoang, Thang B.
在支持表面等离子体共振的薄金属膜中的空气纳米孔的周期性阵列可以提供一种在纳米尺度上增强光-物质相互作用的替代方法。近年来，纳米孔阵列由于其在生物传感、光发射增强和光谱学中的应用而引起了人们极大的兴趣。在这里，我们采用一种简单的技术来制造纳米孔阵列，并研究其光子应用，包括增强激光和自发辐射的新型纳米材料。与复杂且最常用的电子束光刻技术相比，通过使用阴影纳米球光刻技术和电子束沉积的简单组合来制造纳米孔的六边形阵列。通过光谱和时间表征，结果表明，这些阵列提供了一个增强的激光发射的有机染料液体增益介质的品质因数高于150，以及加速衰减速率的CdSe量子点。因此，纳米孔阵列的简单制造以及它们优异的光学响应可以在等离子体激元器件的工业化中提供巨大的潜力，所述等离子体激元器件用于新兴技术的各个领域，例如气体传感、生物医学成像和超快片上相干光源。
Periodic arrays of air nanoholes in thin metal films that support surface plasmon resonances can provide an alternative approach for boosting the light–matter interactions at the nanoscale. Nanohole arrays have garnered great interest in recent years for their use in biosensing, light emission enhancement, and spectroscopy. Here, we employ a simple technique to fabricate nanohole arrays and examine their photonic applications including enhanced lasing and spontaneous emission of novel nanomaterials. In contrast to the complicated and most commonly used electron-beam lithography technique, hexagonal arrays of nanoholes are fabricated by using a simple combination of shadowing nanosphere lithography technique and electron-beam deposition. Through spectral and temporal characterizations, it was shown that these arrays offer an enhancement in the lasing emission of an organic dye liquid gain medium with a quality factor above 150 as well as an accelerated decay rate for CdSe quantum dots. The simple fabrication of nanohole arrays together with their excellent optical responses can therefore offer a great potential in the industrialization of plasmonic devices for use in various realms of emerging technologies such as gas sensing, biomedical imaging, and ultrafast on-chip coherent light sources.