Afficher la couverture 'Imaging of THz photonic modes by scattering scanning near-field optical microscopy | Thomas, L.' en grand format
/5

0 avis

Imaging of THz photonic modes by scattering scanning near-field optical microscopy

Archive ouverte : Article de revue

Thomas, L. | Hannotte, Theo | Santos, Cristiane N. | Walter, Benjamin | Lavancier, Melanie | Eliet, Sophie | Faucher, Marc | Lampin, Jean-Francois | Peretti, Romain

Edité par HAL CCSD ; Washington, D.C. : American Chemical Society

International audience. We investigated the near-field distribution associated to the photonic mode of terahertz photonic micro-resonators by scattering scanning near-field optical microscopy. Probing individual THz microresonators concentrating electric field is important for high-sensitivity chemical and biochemical sensing and fundamental light-matter interactions studies at nanoscale. We imaged both electric field concentration predicted by numerical simulations and unexpected patterns that deviate from intuitive assumptions. We propose a scenario based on the multiplication of the near-field with the far-field pattern of the probe / resonator ensemble that is in excellent agreement with the experimental data and propose an image analysis procedure to recover the near-field of such structures.

Consulter en ligne

Suggestions

Du même auteur

Split-ring resonators imaged by THz s-SNOM

Archive ouverte: Communication dans un congrès

Santos, Cristiane | 2022-08-28

International audience. Split-ring resonators (SRRs) are one of the most common building blocks to design metamaterials operating over a large range of frequencies in the electromagnetic spectrum. Here we acquire s-...

Beyond the Dynamic range approach In noise evaluation for Terahertz Time do...

Archive ouverte: Communication dans un congrès

Muller, Clemence | 2021-08-29

International audience. THz-TDS is used for a myriad of purposes. Still today, the usual way to compare different system in terms of signal to noise ratio is to look at the dynamic range. We propose here a more reli...

SOI-based micro-mechanical terahertz detector operating at room-temperature...

Archive ouverte: Article de revue

Froberger, Kevin | 2022-06-27

International audience. We present a micro-mechanical terahertz (THz) detector fabricated on a silicon on insulator substrate and operating at room-temperature. The device is based on a U-shaped cantilever of microm...

Du même sujet

Light matter interaction enhancement through spatial confinement in the THz...

Archive ouverte: Communication dans un congrès

Hannotte, Theo | 2022-04-03

International audience. We explored two ways to enhance light matter interaction in the THz range through spatial confinement of the electric field. Firstly, a broadband metallic waveguide with low losses and low di...

Terahertz Band Communications With Topological Valley Photonic Crystal Wave...

Archive ouverte: Article de revue

Webber, Julian | 2021-12-15

International audience. The sixth generation (6 G) communication standard is expected to include support for very-high data rates (over 100 Gbit/s) and device electronics will require processors with on-chip communi...

THz s-SNOM imaging of logarithmic spiral antennas

Archive ouverte: Communication dans un congrès

Santos, C. | 2021-08-29

oral. International audience. Probing the near-field of photonic components at sub-wavelength scale is of high interest to improve the design of future THz devices. We report on the THz near-field imaging of logarit...

Magnetization rotation-based polarization control of spintronic terahertz e...

Archive ouverte: Communication dans un congrès

Kolejak, Pierre | 2022-09-05

oral. International audience. Recently, the terahertz family of sources increased by newly-developed terahertz spintronic emitter (STE), which competes with the traditional in many ways. This30THz-broadband gapless ...

Integrated SOI photoacoustic gas sensor at THz frequencies for food quality...

Archive ouverte: Thèse

Akiki, Elias | 2021-06-25

In this thesis work, a photoacoustic THz gas sensor (operating in the 620-690 GHz band) used for monitoring Volatile Organic compounds (VOCs) in food packages is presented. This gas sensor is fabricated on low-loss THz High resist...

Active stabilization of terahertz semiconductor dual-comb laser sources emp...

Archive ouverte: Article de revue

Zhao, Yiran | 2021-04

International audience. Dual-comb sources with equally spaced and low phase noise frequency lines are of great importance for high resolution spectroscopy and metrology. In the terahertz frequency range, electricall...

Chargement des enrichissements...