Characterization of Highly Doped Si Through the Excitation of THz Surface Plasmons

Назаров, М. М.; Shkurinov, A. P.; Garet, Frédéric; Coutaz, Jean‐Louis

doi:10.1109/tthz.2015.2443562

Cited by 15 publications

(8 citation statements)

References 37 publications

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“…This propagating mode was first predicted by Sommerfeld [38] and was studied at even lower frequencies (microwaves) in the 1950s [39][40][41]. Since then, a number of groups have shown that bound surface waves can propagate over distances up to 10-20 cm on a variety of different metals sheets and wires over a broad range of THz frequencies [42][43][44][45][46][47][48][49][50][51][52][53].…”

Section: Plasmonic Measurements At Odds With Predictionsmentioning

confidence: 79%

“…Using an experimental system similar to that used in [50], Nazarov and coworkers recently measured the complex permittivity of heavily doped silicon from ~0.1-1 THz, as shown in Figure 9 [53]. They also found that their results did not match the predictions of the Drude model, not only in the magnitude, but also in the variation with frequency.…”

Section: Measurement Of the Optical Constants Of Metals Via The Excitmentioning

confidence: 99%

Section: Measurement Of the Optical Constants Of Metals Via The Excitmentioning

confidence: 99%

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Non-Drude like behaviour of metals in the terahertz spectral range

Pandey

Gupta

Chanana

et al. 2016

Advances in Physics: X

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Section: Plasmonic Measurements At Odds With Predictionsmentioning

confidence: 79%

Section: Measurement Of the Optical Constants Of Metals Via The Excitmentioning

confidence: 99%

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Non-Drude like behaviour of metals in the terahertz spectral range

Pandey

Gupta

Chanana

et al. 2016

Advances in Physics: X

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“…Other methods that typically result in higher excitation efficiency of surface waves rely on careful matching of the wavevectors of an incident wave (normally from the side of an analyte) with that of a surface wave, while also employing some type of a directional coupler arrangement. A classic technique based on this principle employs a higher refractive index (compared to that of an analyte) prism coupler, where the incident angle of the excitation wave is chosen in such a way as to match the propagation constant of the incident wave (projection of the wavevector onto the surface plane) with that of a surface wave [51]. Another classic technique achieves matching of the excitation field and surface wave propagation constants by employing diffraction grating inscribed onto the surface [52].…”

Section: Discussionmentioning

confidence: 99%

Surface Wave Enhanced Sensing in the Terahertz Spectral Range: Modalities, Materials, and Perspectives

Poulin

Giannacopoulos

Skorobogatiy

2019

Sensors

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The terahertz spectral range (frequencies of 0.1-10 THz) has recently emerged as the next frontier in non-destructive imaging and sensing. Here, we review amplitude-based and phase-based sensing modalities in the context of the surface wave enhanced sensing in the terahertz frequency band. A variety of surface waves are considered including surface plasmon polaritons on metals, semiconductors, and zero gap materials, surface phonon polaritons on polaritonic materials, Zenneck waves on high-k dielectrics, as well as spoof surface plasmons and spoof Zenneck waves on structured interfaces. Special attention is paid to the trade-off between surface wave localization and sensor sensitivity. Furthermore, a detailed theoretical analysis of the surface wave optical properties as well as the sensitivity of sensors based on such waves is supplemented with many examples related to naturally occurring and artificial materials. We believe our review can be of interest to scientists pursuing research in novel high-performance sensor designs operating at frequencies beyond the visible/IR band. Keywords: terahertz band; surface waves; amplitude sensing modality; phase sensing modality; surface plasmon polaritons; surface phonon polaritons; Zenneck waves; spoof plasmons Recently, the THz spectral range (frequencies of 0.1-10 THz, wavelengths of 3 mm-30 µm) has emerged as the next frontier in non-destructive imaging and sensing. Key advantages when operating in the THz band are the ability to detect the complex electric field of THz waves (phase and amplitude), availability of both pulsed (sub-1 ps) and continuous wave (CW) THz systems, as well as ability of conducting dynamic measurements with sub-1 ms temporal resolution [6]. Additionally, relative transparency of dry dielectrics to THz radiation, strong absorption of THz waves by water and other polar solutions, as well as the non-ionizing nature of THz light enable many and more graphical than analytical, which is the main reason why we chose a more theoretically elegant approach for the characterization of sensor sensitivity with respect to changes in the analyte refractive index complemented by the study of the surface wave probing depth. Amplitude Sensing ModalityAmplitude sensing modality offers the simplest sensor implementation as it only requires monitoring of the sensor transmission amplitude. A simplified schematic of an amplitude-based sensor is presented in Figure 1. The amplitude sensing detection modality is mostly used to detect variations in the imaginary part of the analyte refractive index.Sensors 2020, 20, x FOR PEER REVIEW 3 of 24 theoretically elegant approach for the characterization of sensor sensitivity with respect to changes in the analyte refractive index complemented by the study of the surface wave probing depth. Amplitude Sensing ModalityAmplitude sensing modality offers the simplest sensor implementation as it only requires monitoring of the sensor transmission amplitude. A simplified schematic of an amplitude-based sensor is presented in Figure 1...

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“…There were attempts to combine the possibilities of SPP refractometry and TDS spectroscopy for study of the surface of metals and semiconductors in the THz range [30][31][32]. A THz radiation pulse was converted into a pulse of broadband SPPs and, after they traveled a macroscopic distance over the sample, the SPPs were inversely converted into bulk radiation, which was detected, and the resulting photocurrent dependence on time was processed by the standard TDS method.…”

Section: Introductionmentioning

confidence: 99%

Obtaining the Effective Dielectric Permittivity of a Conducting Surface in the Terahertz Range via the Characteristics of Surface Plasmon Polaritons

Gerasimov¹,

Nikitin²,

Lemzyakov³

et al. 2023

Preprint

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With the intensive development of data transmitting and processing devices of the terahertz (THz) frequency range, an important part of which are integrated plasmonic components and communication lines, it becomes necessary to measure correctly the optical constants of their conductive surfaces. In the paper we describe a reliable method for determining the effective permittivity εm of a metal surface from the measured characteristics (refractive and absorption indices) of THz surface plasmon polaritons (SPPs). The novelty of the method is the conduction of measurements on a metal surface with a dielectric layer of subwavelength thickness, suppressing the radiative losses of SPPs, which are not taken into account by the SPP dispersion equation. The method was tested on a number of flat "gold sputtering - zinc sulfide layer - air" structures with the use of the THz radiation (λ0 = 141 μm) of the Novosibirsk free electron laser (NovoFEL). The SPP characteristics were determined from interferograms measured with a plasmon Michelson interferometer. It was found that the method allowed a significant increase in the accuracy of εm in comparison with measurements on the same metal surface without a dielectric layer.

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Characterization of Highly Doped Si Through the Excitation of THz Surface Plasmons

Cited by 15 publications

References 37 publications

Non-Drude like behaviour of metals in the terahertz spectral range

Non-Drude like behaviour of metals in the terahertz spectral range

Surface Wave Enhanced Sensing in the Terahertz Spectral Range: Modalities, Materials, and Perspectives

Obtaining the Effective Dielectric Permittivity of a Conducting Surface in the Terahertz Range via the Characteristics of Surface Plasmon Polaritons

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