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相关概念视频

Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

3.0K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
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相关实验视频

Updated: Jul 12, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

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高场THz源的中心在2.6 THz.

Wei Cui, Eeswar Kumar Yalavarthi, Aswin Vishnu Radhan

    Optics express
    |October 20, 2023
    PubMed
    概括

    我们使用化 (GaP) 开发了一种紧的高场特拉赫兹 (THz) 源. 这种先进的THz源实现了高峰场,使THz连贯控制和非线性现象的新研究成为可能.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 凝聚物质物理学 凝聚物质物理学
    • 太赫兹科学与技术 太赫兹科学与技术

    背景情况:

    • 高场特拉赫兹 (THz) 源对于探索非线性现象至关重要.
    • 现有的THz生成方法通常需要复杂的设置或缺乏足够的场强度.
    • 化 (GaP) 由于其非线性特性,是光学整形的一个有前途的材料.

    研究的目的:

    • 为了展示一个桌面上,高场的THz源.
    • 为了达到超过300kV/cm的峰值THz场.
    • 为了能够访问新的THz连贯控制和2THz以上的非线性现象.

    主要方法:

    • 在化 (GaP) 晶体中的协同近红外 (NIR) 脉冲的光学校正.
    • 实施倾斜脉冲前相匹配,使用刻在GaP表面的相格子.
    • 泰赫兹峰值场的特征和光谱特性.

    主要成果:

    • 产生的峰值THz场超过300kV/cm,频谱中心在2.6 THz.
    • 在0.57mJ NIR脉冲能量时观察到THz生成效率的和开始.
    • 预计THz峰值场的潜力高达866kV/cm,具有5mJ的NIR脉冲.

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    相关实验视频

    Last Updated: Jul 12, 2025

    Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

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    Published on: December 27, 2012

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    结论:

    • 开发的桌面THz源为产生高场THz辐射提供了一个实用的方法.
    • 实验配置通过倾斜脉冲前相匹配在GaP中证明了高效的THz生成.
    • 这项技术为THz驱动的非线性光学和量子控制的先进研究开辟了道路.