Longwave plasmonics on doped silicon and silicides

Soref, Richard A.; Peale, Robert E.; Buchwald, Walter R.

doi:10.1364/oe.16.006507

Cited by 117 publications

(89 citation statements)

References 7 publications

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“…For building plasmonic circuits, a ridge width between 120 nm and 300 nm represents a reasonable trade-off between confinement and travel range. Although we investigated the plasmon modes guided by silver metal nano-ridges, and the ridges can be other types of high electron density materials such as heavily doped semiconductors for infrared wavelength range [65,66]. Flat-top nano-ridge surface plasmon waveguides are easy to fabricate.…”

Section: Discussionmentioning

confidence: 99%

Mode properties of flat-top silver nanoridge surface plasmon waveguides

et al. 2012

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We investigate surface plasmon modes supported by flat-top silver nano-ridges. We calculate the mode electromagnetic field distribution, the dispersion curve, the travel range, and the figure-of-merit of the nano-ridge mode. We find that the nanoridge surface plasmon modes are quasi-TEM modes with longitudinal field components three orders of magnitude smaller than the transverse field components.The quasi-TEM nature of mode profiles reveals that the propagation of free electron oscillations on the top of the nano-ridge contributes mainly to the tightly confined ridge mode. We also find that as the width of the nano-ridge decreases, the ridge mode becomes more tightly confined on the ridge top. As the width of the nano-ridge increases, the nano-ridge mode approaches two decoupled right-angle wedge plasmon modes.

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Section: Discussionmentioning

confidence: 99%

Mode properties of flat-top silver nanoridge surface plasmon waveguides

et al. 2012

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“…Resistive losses in the metallic taper can generate a heat source which considerably raises the steady state NFT temperature and therefore accelerate its degradation. This has led to the investigation of alternative plasmonic materials, such as highly doped Silicon [27], or refractory materials such as Titanium Nitride [28] and Zirconium Nitride [29]. It seems however that the superior plasmonic performance of Au is still desirable over these alternative materials.…”

Section: Nft Designmentioning

confidence: 99%

Optical and thermal analysis of the light-heat conversion process employing an antenna-based hybrid plasmonic waveguide for HAMR

Abadía¹,

Bello²,

Zhong³

et al. 2018

Opt. Express

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Abstract:We investigate a tapered, hybrid plasmonic waveguide which has previously been proposed as an optically efficient near-field transducer (NFT), or component thereof, in several devices which aim to exploit nanofocused light. We numerically analyze how light is transported through the waveguide and ultimately focused via effective-mode coupling and taper optimization. Crucial dimensional parameters in this optimization process are identified that are not only necessary to achieve maximum optical throughput, but also optimum thermal performance with specific application towards heat-assisted magnetic recording (HAMR). It is shown that existing devices constructed on similar waveguides may benefit from a heat spreader to avoid deformation of the plasmonic element which we achieve with no cost to the optical efficiency. For HAMR, our design is able to surpass many industry requirements in regard to both optical and thermal efficiency using pertinent figure of merits like 8.5% optical efficiency. 503-510 (2015). 15. C. Peng, "Efficient excitation of a monopole optical transducer for near-field recording," J. Appl. Phys. 112(4), 043108 (2012). 16. X. He, L. Yang, and T. Yang, "Optical nanofocusing by tapering coupled photonic-plasmonic waveguides," Opt.Express 19

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“…The investigation of alternative plasmonic materials has recently been accelerated 7,[14][15][16][17][18][19][20][21][22][23][24][25][26] due to the push to the infrared where noble metals are not as useful due to weak mode confinement and lack of CMOS compatibility. Two promising candidates, aluminum and gallium doped ZnO, have been proposed as possible plasmonic materials in the near- 17,19 and mid-IR 26 as these materials typically demonstrate plasma wavelengths $1 lm.…”

Section: Introductionmentioning

confidence: 99%

Investigation of plasmon resonance tunneling through subwavelength hole arrays in highly doped conductive ZnO films

Nader

Vangala

Hendrickson

et al. 2015

Journal of Applied Physics

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Experimental results pertaining to plasmon resonance tunneling through a highly conductive zinc oxide (ZnO) layer with subwavelength hole-arrays is investigated in the mid-infrared regime. Gallium-doped ZnO layers are pulsed-laser deposited on a silicon wafer. The ZnO has metallic optical properties with a bulk plasma frequency of 214 THz, which is equivalent to a free space wavelength of 1.4 μm. Hole arrays with different periods and hole shapes are fabricated via a standard photolithography process. Resonant mode tunneling characteristics are experimentally studied for different incident angles and compared with surface plasmon theoretical calculations and finite-difference time-domain simulations. Transmission peaks, higher than the baseline predicted by diffraction theory, are observed in each of the samples at wavelengths that correspond to the excitation of surface plasmon modes.

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Longwave plasmonics on doped silicon and silicides

Cited by 117 publications

References 7 publications

Mode properties of flat-top silver nanoridge surface plasmon waveguides

Mode properties of flat-top silver nanoridge surface plasmon waveguides

Optical and thermal analysis of the light-heat conversion process employing an antenna-based hybrid plasmonic waveguide for HAMR

Investigation of plasmon resonance tunneling through subwavelength hole arrays in highly doped conductive ZnO films

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