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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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IR Spectrometers01:25

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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...
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相关实验视频

Updated: Jul 16, 2025

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
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空间光谱分辨率调节的快照成像光谱仪:分析设计和实施.

Yiqun Ji, Fenli Tan, Shijia Zhao

    Applied optics
    |September 14, 2023
    PubMed
    概括

    本研究介绍了一种可调整的整体场快照成像光谱仪 (TIF-SIS),可以克服空间光谱分辨率的权衡. 新的TIF-SIS为高级应用提供持续调节的分辨率和光通量.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 频谱学是一种光谱学.
    • 图像技术技术的成像技术

    背景情况:

    • 快照成像光谱仪在动态目标跟踪和实时识别方面比扫描系统具有优势.
    • 现有的快照光谱成像技术由于空间分辨率和光谱分辨率之间的权衡而面临限制.
    • 高光吞吐量和可调节的分辨率对于特定应用,如弱光谱签名识别和生物医学研究至关重要.

    研究的目的:

    • 提出和演示一个完整的现场快照成像光谱仪 (TIF-SIS),具有可连续调节的空间光谱分辨率和光通量.
    • 克服当前快照成像技术中空间分辨率和光谱分辨率之间的固有权衡.
    • 为了在需要灵活分辨率和高光收集的领域实现更广泛的应用.

    主要方法:

    • 该TIF-SIS系统包括前光学,一个镜片阵列和一个聚合分散子系统.
    • 理论分析得出了系统参数 (F数,镜片片旋转,聚焦距离) 和空间光谱分辨率/光通量之间的关系.
    • 一个实验性的TIF-SIS是使用一个定制的100x100镜片阵列和0.716填充因子构建的.

    主要成果:

    • 实验结果表明,光谱分辨率从4.17nm持续调整到0.82nm.
    • 数据立方体尺寸 (Nx×Ny×Nλ) 可以在500-650nm可见范围内从35×35×36调整到40×40×183.

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  • 这些实验发现与理论预测一致,验证了系统的可调节能力.

    • 结论:

    • 开发的TIF-SIS成功地提供了可连续调节的空间光谱分辨率和光通量.
    • 这种可调节的功能解决了以前的快照光谱成像系统的局限性.
    • TIF-SIS为要求高光通量和可调节分辨率的应用程序开辟了新的途径,特别是在弱光谱签名识别和生物医学成像方面.