FDTD-modelling of terahertz solid immersion microscopy

V. A. Zhelnov; N. V. Chernomyrdin; A. S. Kucheryavenko; I. N. Dolganova; G. M. Katyba; K. I. Zaytsev

doi:10.1117/12.2532389

18 October 2019 FDTD-modelling of terahertz solid immersion microscopy

V. A. Zhelnov, N. V. Chernomyrdin, A. S. Kucheryavenko, I. N. Dolganova, G. M. Katyba, K. I. Zaytsev

Proceedings Volume 11164, Millimetre Wave and Terahertz Sensors and Technology XII; 111640H (2019) https://doi.org/10.1117/12.2532389
Event: SPIE Security + Defence, 2019, Strasbourg, France

Abstract

Terahertz (THz) solid immersion microscopy is a novel THz imaging modality, which provides both a sub- wavelength spatial resolution and a high energy efficiency, thanks to the absence of sub-wavelength apertures and probes in an optical scheme. In this work, we apply the finite-difference time-domain technique for solving the Maxwell's equations in order to analyze the performance of our original THz SIL arrangement. Namely, we estimate the theoretical limits for the spatial resolution and the depth of field of our optical system, as well as specify the confidential intervals for the alignment of optical elements. The observed results demonstrate the resolution of 0:15λ and the depth of field of 0:12λ(λ is an electromagnetic wavelength), justifying advanced performance of our THz SIL.

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V. A. Zhelnov, N. V. Chernomyrdin, A. S. Kucheryavenko, I. N. Dolganova, G. M. Katyba, and K. I. Zaytsev "FDTD-modelling of terahertz solid immersion microscopy", Proc. SPIE 11164, Millimetre Wave and Terahertz Sensors and Technology XII, 111640H (18 October 2019); https://doi.org/10.1117/12.2532389

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