太赫兹波段宽带应用的衍射聚焦结构

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI:10.1109/IRMMW-THZ.2018.8510503

K. Liebert, M. Rachon, J. Bomba, A. Sobczyk, A. Siemion, J. Suszek, M. Sypek

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引用次数: 1

摘要

衍射结构的小厚度导致低吸收，因此使它们成为太赫兹光束整形的理想选择。然而，衍射光学存在较大的色差，可以通过采用不同的设计方法如高阶相形来抑制色差。本文分析了球面透镜和增大焦距的结构，并将其编码为一阶和二阶相形，以降低色差。

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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Diffractive Focusing Structures for Broadband Application in thz Range

Small thickness of diffractive structures results in low absorption and therefore makes them ideal for THz beam shaping. However, diffractive optics suffers from high chromatic aberrations, which can be suppressed by using different designing method like high order kinoforms. In this paper spherical lenses and structures with increased depth of focus, coded as kinoforms of first and second order, are analyzed for chromatic aberration reduction.

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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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