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Updated: Jul 9, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

通过直接地表结构的时空映射生成THz脉冲的角度变化时间延迟

Elazar Elias^1,2, Symeon Sideris^2,3, Cormac McDonnell^2,3

¹Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv 6779801, Israel.

ACS applied optical materials

|December 1, 2023

概括

研究人员使用非线性元表面创建了具有可控延迟的双太赫兹 (THz) 脉冲. 这一突破使得THz波的精确时空成型能够用于先进的光谱学和分子动力学研究.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
太赫兹 (THz) 科学科学

背景情况:

非线性超表面提供独特的光物质相互作用.
精确控制太赫兹 (THz) 波的生成和塑造对于先进的应用至关重要.
电磁脉冲的时空控制是超快科学的一个关键挑战.

研究的目的:

通过实验证明了双THz脉冲的产生,并量身定制了取决于角度的时间延迟.
探索非线性超表面的使用,用于THz波的时空造型.
为了研究产生全方圆THz极化范围的潜力.

主要方法:

一个非线性地表的激发与近红外的femtosecond脉冲.
利用Pancharatnam-Berry阶段进行对称和反对称的地表配置.
采用抛物线镜进行对接和分析时空形状.

主要成果:

成功生成双THz脉冲,并设计了取决于角度的时间延迟.
观测时空"X形"排放配置文件.
通过极化复杂化实现可调节的圆THz偏振的演示.

结论:

非线性超表面有效地将其空间响应映射到THz时间配置文件以产生脉冲.
可以实现THz波的时空造型,可以精确控制脉冲特征.
开发的技术在THz光谱学和分子动力学中具有很大的应用潜力,特别是在探头实验中.

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