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相关概念视频

IR Spectrometers01:25

IR Spectrometers

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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.1K

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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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交叉分散光谱仪校准仅使用激光频率.

William Newman, Jake M Charsley, Jamie Slattery

    Optics express
    |November 14, 2024
    PubMed
    概括

    一种新的激光频率技术校准高分辨率梯度光谱仪. 这种方法精确地标记了光谱线,提高了准确性,并消除了对传统校准灯和图谱的需求.

    科学领域:

    • 频谱学是一种光谱学.
    • 光学工程是指光学工程.
    • 计量学 计量学 计量学

    背景情况:

    • 高分辨率光谱仪需要复杂的校准.
    • 传统方法使用宽带灯和排放线图谱.
    • 这些方法可能是劳动密集型和不太精确的.

    研究的目的:

    • 为高分辨率梯级光谱仪引入一种新的,简化的校准技术.
    • 为了达到低于女性计的波长准确度.
    • 为了在没有传统方法的情况下实现GPS参考校准.

    主要方法:

    • 使用激光频率 (LFC) 进行校准.
    • 删除特定的LFC线路以确定光谱位置.
    • 将LFC减少到每条单一的线条以确定光谱仪参数.

    主要成果:

    • 仅使用LFC完成高分辨率梯级光谱仪的完整校准.
    • 实现了低于女性计波长的准确性.
    • 消除对宽带原子线源的需求.

    结论:

    • 基于LFC的校准是一种强大的,高度准确的方法.

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  • 这种技术简化了光谱仪校准.
  • 它提供了直接的GPS参考精度,增强了计量应用.