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相关概念视频

Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

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 the...

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相关实验视频

Updated: Jun 29, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

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使用光子灯进行非干涉度重构无效测试的源波面生成.

Nikolas Romer, Jannick P Rolland

    Optics letters
    |December 15, 2025
    PubMed
    概括

    一种新的方法使用光子灯来创建定制的光波面,用于测试光学表面. 这项技术可以为球形,非球形和自由形光学进行精确,可重新配置的零测试.

    科学领域:

    • 光学工程是指光学工程.
    • 计量学 计量学 计量学
    • 光子学是指光子学的使用方法.

    背景情况:

    • 对光学表面的准确测试对于高性能光学系统至关重要.
    • 现有的零测试方法可能很复杂,适应性有限,特别是对于自由形光学.

    研究的目的:

    • 介绍一种使用光子灯生成可重新配置的定制波面的新方法.
    • 为了证明这种方法在各种光学表面类型的非干扰测量零测试中的应用.

    主要方法:

    • 使用光子灯,光纤设备,控制输出光场.
    • 在单模光纤端口调节输入强度和相位,以塑造波浪.
    • 采用响应矩阵反转方法来产生波浪和模拟.

    主要成果:

    • 成功模拟了用19个端口,非模式选择性的光子灯生成定制波浪.
    • 在模拟中从目标获得71nm的根平均平方 (RMS) 误差的波面.
    • 模拟了使用光子灯对自由形光学表面的紧,非干扰测量无效测试.

    结论:

    • 光子灯提供了一种可行的方法,用于创建可重新配置的无效波面.

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  • 该技术适用于测试球形,非球形,特别是自由形光学表面.
  • 拟议的方法可以实现紧且可适应的光学计量解决方案.