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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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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 13, 2025

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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集成的重建光谱仪与可编程的光子电路.

Chunhui Yao1, Kangning Xu2, Wanlu Zhang1

  • 1Centre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge, CB3 0FA, UK.

Nature communications
|October 11, 2023
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的微型光谱仪,使用可编程光子电路和马赫-泽恩德干扰仪 (MZI) 元素. 这种光学光谱传感器实现了超高分辨率,用于先进的现场表征.

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科学领域:

  • 光子学和光学工程的工程.
  • 光谱和传感技术的技术.
  • 集成光学和纳米光子学.

背景情况:

  • 光学光谱传感器对于在各种科学领域研究光物质相互作用至关重要.
  • 传统的,重的光谱仪的小型化对于实现in situ和in vitro表征系统至关重要.
  • 对于便携式和现场应用的紧型高性能光谱仪的需求越来越大.

研究的目的:

  • 提出并演示使用可编程光子电路的新型集成重建光谱仪.
  • 为了实现超高的光谱分辨率和宽带宽在一个小型化的形式因素.
  • 克服现有的微型光谱仪技术的局限性.

主要方法:

  • 一个重建性光谱仪的设计,基于一些工程机械的马赫-泽恩德干扰仪 (MZI) 元素.
  • 实现一个芯片上的光谱仪,采用6级级联的MZI结构.
  • 利用可编程光子电路来实现可扩展,无关联的采样通道.

主要成果:

  • 在 >200纳米 (nm) 带宽上展示了芯片上的光谱仪,其分辨率低于10皮克米 (分钟).
  • 使用有限数量的采样通道 (729) 实现了超高分辨率.
  • 达到超过20,000的带宽与分辨率比,明显超过现有的微型光谱仪.

结论:

  • 拟议的综合重建光谱仪为小型化提供了一个可扩展和具有成本效益的解决方案.
  • 该设备在一个紧的光学光谱传感器中实现了前所未有的光谱分辨率和带宽.
  • 这项技术有可能彻底改变现场和体外光谱分析.