Terahertz microscope with oblique subwavelength illumination: design principle

IF 0.9 4区 工程技术 Q3 Engineering Quantum Electronics Pub Date : 2022-01-01 DOI:10.1070/qel17958
O. Minin, I. Minin
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引用次数: 4

Abstract

It is shown that the image contrast in the air when using a microscope based on dielectric microparticles with a size of the order of wavelength can be significantly enhanced with the help microparticles that provide the formation of the radiation localisation region at an angle to the direction of radiation incidence (at an angle to the optical axis). For this purpose, a screen is placed in front of the particle, which blocks part of the incident beam, forming a photonic hook or a photonic jet (terajet) with oblique illumination in the near field.
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倾斜亚波长照明的太赫兹显微镜:设计原理
结果表明,在以波长数量级的介电微粒子为基础的显微镜下,提供与辐射入射方向成一定角度(与光轴成一定角度)的辐射定位区形成的微粒子可以显著增强空气中的图像对比度。为此,在粒子前面放置一个屏幕,阻挡部分入射光束,形成近场斜照射的光子挂钩或光子射流(terajet)。
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来源期刊
Quantum Electronics
Quantum Electronics 工程技术-工程:电子与电气
CiteScore
3.00
自引率
11.10%
发文量
95
审稿时长
3-6 weeks
期刊介绍: Quantum Electronics covers the following principal headings Letters Lasers Active Media Interaction of Laser Radiation with Matter Laser Plasma Nonlinear Optical Phenomena Nanotechnologies Quantum Electronic Devices Optical Processing of Information Fiber and Integrated Optics Laser Applications in Technology and Metrology, Biology and Medicine.
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