光学
光学(聚焦)
平版印刷术
材料科学
纳米光子学
准直光
纳米尺度
光电子学
纳米技术
激光器
物理
作者
Abhishek K. Amrithanath,Sridhar Krishnaswamy
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-09-20
卷期号:46 (19): 4734-4734
被引量:3
摘要
Collecting significant and measurable signals from the typically omnidirectional emission of nanoscale emitters is challenging. To improve the collection efficiency, it is essential to deterministically place the emitters in desired locations and design mode converters to match the modes of emission to those of the collection system. In this Letter, we propose the deterministic placement of nanoscale emitters using a pick-and-place technique called polymer-pen lithography. We demonstrate the concept with upconversion nanoparticles placed deterministically at the focus of three-dimensional-printed ellipsoidal micro-lenses. A significant part of the forward-going emission is collimated leading to increased collection efficiency, even at low numerical apertures of the collecting optics. The proposed approach lends itself to hybrid integration for fiber-to-chip and on-chip applications.
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