Stability of the Formation of an Image Using a Terajet with Respect to the Beam Shift

IF 1.4 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
A. G. Paddubskaya, A. V. Novitsky, O. V. Minin, I. V. Minin
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引用次数: 0

Abstract

The shift of an image of a dielectric sphere asymmetrically irradiated by a terahertz Gaussian beam in terahertz imaging systems has been demonstrated experimentally. Numerical calculations using the operator scattering theory have shown the bending of the localization region of the electromagnetic field near the shadow surface of the dielectric sphere when it is shifted with respect to the waist center of the Gaussian beam, leading to the formation of the so-called “photonic hook” with the properties depending on the polarization and frequency of the incident radiation. The possibility of reaching a spatial resolution of 0.38λ in the studied range has been shown experimentally. The obtained results can be used to increase the resolution of commercial scanning terahertz systems.

Abstract Image

使用 Terajet 形成图像时光束偏移的稳定性
实验证明,在太赫兹成像系统中,被太赫兹高斯光束不对称照射的介质球的图像会发生偏移。利用算子散射理论进行的数值计算表明,当介质球相对于高斯光束腰部中心偏移时,其阴影表面附近的电磁场定位区域会发生弯曲,从而形成所谓的 "光子钩",其特性取决于入射辐射的偏振和频率。实验证明,在所研究的范围内,空间分辨率可以达到 0.38λ。所获得的结果可用于提高商用扫描太赫兹系统的分辨率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
JETP Letters
JETP Letters 物理-物理:综合
CiteScore
2.40
自引率
30.80%
发文量
164
审稿时长
3-6 weeks
期刊介绍: All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
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