Round-tower plasmonic optical microfiber tip for nanofocusing with a high field enhancement

Zhu, Liming; Yin, Yiheng; Dai, Lingling; Hu, Yanhui; Jiang, Nan; Zheng, Zhichao; Cai, Chao; Zhao, Weisheng; Ding, M. D.

doi:10.1016/j.optcom.2019.124358

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…It can confine the electromagnetic fields to the spatial extent which scale is far smaller than the wavelength, therefore, SPPs can overcome the diffraction limitation, and produce strong local field enhancement effect. Recently, SPPs have been widely researched and applied in the fields of light-matter nonlinear interaction enhancement [2][3][4][5], optical communication at micro/nano scale [6][7][8][9], nano-focusing [10][11][12][13],…”

Section: Introductionmentioning

confidence: 99%

Propagation and excitation properties of nonlinear surface plasmon polaritons in a rectangular barrier

Tian,

Zhang,

Duan

et al. 2022

Preprint

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We propose a scheme to study the nonlinear propagation properties of nonlinear surface plasmon polaritons (SPPs) in a three level Λ type electromagnetically induced transparency (EIT) system with modulation of a rectangular barrier. Based on the multi scale method, the nonlinear Schrödinger equation (NLSE) describing nonlinear propagation of SPPs is derived, and the rectangular barrier affecting propagation of nonlinear SPPs is provided by an off-resonance Stark field. For the single nonlinear SPPs incident case, by adjusting the height and half width of the barrier, we can realize transmission, trapping and reflection of the nonlinear SPPs. For two nonlinear SPPs symmetrical incident case, we find that a periodic intensity distribution in transverse direction mode can be excited in the rectangular barrier, and we study the relationship between propagation properties of such excited modes in the barrier with nonlinearity, half width of the barrier and phase difference of the initial nonlinear SPPs. In addition, we design an optical switch of nonlinear SPPs based on the above results. The results obtained here not only provide a theoretical basis for the study of the interaction between nonlinear SPPs and external potentials, but also have broad application prospects in the field of optical information at micro/nano scale.

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Section: Introductionmentioning

confidence: 99%

Propagation and excitation properties of nonlinear surface plasmon polaritons in a rectangular barrier

Tian,

Zhang,

Duan

et al. 2022

Preprint

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“…Spatial focusing of surface plasmon polaritons (SPPs), especially at nanoscale, recently has been one of the hot spots in the field of micro-nano optics due to its huge application potentials [1]. It not only provides a powerful technical basis for the development of nano optical devices, but also extends the research realm of strong field micro-nano optics [2], such as near-field and super-resolution imaging [3][4][5][6][7][8][9][10][11][12][13], biological sensing [14,15], enhanced Raman spectroscopy [16][17][18][19][20][21][22], nonlinear spectroscopy [23][24][25] and photofield electron emission [26], etc.…”

Section: Introductionmentioning

confidence: 99%

“…In recent studies, it is mentioned that tapered nanoribbons and metallic tips can be used to construct nano-focusing waveguides by means of micro-nano manufacturing, and have been applied in many fields [27][28][29][30][31]. For examples, in 2012, Choo et al achieved efficient nano-focusing of SPPs experimentally, which can focus light to a few nanometers with low loss [29]; Zenin et al used the tapered nanoribbon structure to detect that the light field energy can be concentrated in a space of tens of nanometers through nanofocusing, and the near field intensity at the tip of the tapered waveguide can be enhanced to the order of thousands in 2015 [30]; Zhu et al realized SPPs nano-focusing at the tip of the round tower structure, which enhanced the electric field at the tip of the round tower and obtained nano-level light spots in 2019 [10]. SPPs nanofocusing can also be used as an alternative method to prepare nano-light sources for optical nanoimaging [12,13].…”

Section: Introductionmentioning

confidence: 99%

Spatial Focusing of Surface Polaritons Based on Cross-Phase Modulation

Tan¹,

Li²,

et al. 2021

Preprint

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We theoretically study the spatial focusing of surface polaritons (SPs) in a negative index metamaterial (NIMM)-atomic gas interface waveguide system, based on cross phase modulation (XPM) in a tripod type double electromagnetically induced transparency (EIT) scheme. In the linear region, we realize the low loss stable propagation of SPs, and the group velocities of the probe and signal fields are well matched via double EIT. In the nonlinear region, we show that giant enhancement of the XPM can be obtained. Using a narrow optical soliton in free space, we realize spatial focusing of the SPs solitons, including bright, multi bright, and dark solitons. The full width at the half-maximum (FWHM) of the SPs soliton can be compressed to about ten nanometers, thus, even nanofucsing can be obtained. The results obtained here have certain theoretical significance for nano-scale sensing, spectral enhancement and precision measurement.

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Taking advantage of an axisymmetric plasmonic structure and grooves to nanofocus and ultraenhance a radially polarized electric field

Salmeh,

Mohebbi

2024

Photonics and Nanostructures - Fundamentals and Applications

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Round-tower plasmonic optical microfiber tip for nanofocusing with a high field enhancement

Cited by 5 publications

References 36 publications

Propagation and excitation properties of nonlinear surface plasmon polaritons in a rectangular barrier

Propagation and excitation properties of nonlinear surface plasmon polaritons in a rectangular barrier

Spatial Focusing of Surface Polaritons Based on Cross-Phase Modulation

Taking advantage of an axisymmetric plasmonic structure and grooves to nanofocus and ultraenhance a radially polarized electric field

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