Channeling of fluorescence photons from quantum dots into guided modes of an optical nanofiber tip

IF 2 4区物理与天体物理 Q3 OPTICS

Journal of Optics Pub Date : 2024-04-17 DOI:10.1088/2040-8986/ad3ccb

Resmi M, Elaganuru Bashaiah and Ramachandrarao Yalla

引用次数: 0

Abstract

We demonstrate the channeling of fluorescence photons from quantum dots (QDs) into guided modes of an optical nanofiber tip (ONFT). We deposit QDs on the ONFT using micro/nano fluidic technology. We measure the photon-counting and emission spectrum of fluorescence photons that are channeled into guided modes of the ONFT. The measured emission spectrum confirms the deposition of QDs on the ONFT. We perform numerical simulations to determine channeling efficiency (η) for the ONFT and a single dipole source (SDS) system. For the radially oriented SDS at the center of the facet of the ONFT, we found the maximum η-value of 44% at the fiber size parameter of 7.16, corresponding to the ONFT radius of 0.71 µm for the emission wavelength at 620 nm. Additionally, we investigate the SDS position dependence in transverse directions on the facet of the ONFT in view of keeping experimental ambiguities. The present fiber inline platform may open new avenues in quantum technologies.

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将量子点的荧光光子导入纳米光纤尖端的引导模式

我们展示了量子点（QDs）的荧光光子被导入纳米光纤尖端（ONFT）的引导模式。我们利用微/纳米流体技术将量子点沉积在 ONFT 上。我们测量了进入 ONFT 导向模式的荧光光子的光子计数和发射光谱。测量到的发射光谱证实了 QDs 在 ONFT 上的沉积。我们进行了数值模拟，以确定 ONFT 和单偶极光源 (SDS) 系统的通道效率 (η)。对于位于 ONFT 面板中心的径向 SDS，我们发现在光纤尺寸参数为 7.16 时，最大 η 值为 44%，对应于发射波长为 620 nm 的 0.71 µm ONFT 半径。此外，考虑到保持实验模糊性，我们还研究了 SDS 在 ONFT 面上横向方向的位置依赖性。目前的光纤在线平台可能会为量子技术开辟新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Optics OPTICS-

CiteScore

4.50

自引率

4.80%

发文量

237

审稿时长

1.9 months

期刊介绍： Journal of Optics publishes new experimental and theoretical research across all areas of pure and applied optics, both modern and classical. Research areas are categorised as: Nanophotonics and plasmonics Metamaterials and structured photonic materials Quantum photonics Biophotonics Light-matter interactions Nonlinear and ultrafast optics Propagation, diffraction and scattering Optical communication Integrated optics Photovoltaics and energy harvesting We discourage incremental advances, purely numerical simulations without any validation, or research without a strong optics advance, e.g. computer algorithms applied to optical and imaging processes, equipment designs or material fabrication.