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Article Dans Une Revue ACS Applied Materials & Interfaces Année : 2022

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

Benjamin Walter
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Résumé

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.
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Dates et versions

hal-03608482 , version 1 (15-03-2022)

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L. Thomas, Theo Hannotte, Cristiane N. Santos, Benjamin Walter, Melanie Lavancier, et al.. Imaging of THz photonic modes by scattering scanning near-field optical microscopy. ACS Applied Materials & Interfaces, 2022, 14 (28), pp.32608-32617. ⟨10.1021/acsami.2c01871⟩. ⟨hal-03608482⟩
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