相关实验视频
Updated: Jul 22, 2025
13:31
High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
Published on: December 22, 2015
15.1K
概括
这项研究介绍了一种使用哈达马德变换编码的新型分散光谱仪. 这种设计提高了信号噪声比,并简化了红外光谱应用的现场测量.
科学领域:
- 频谱学是一种光谱学.
- 光学工程是指光学工程.
- 红外技术 红外技术
背景情况:
- 红外设备对于工业,医疗和环境监测至关重要.
- 带有单像素探测器的分散光谱仪提供了成本效益,稳定性和便携性.
- 现有的设计往往面临着光谱分辨率和光通量之间的权衡.
研究的目的:
- 为了展示一种新的,高通量分散光谱仪.
- 为了提高性能,将光谱分辨率与吞吐量脱而出.
- 改进信号噪声比,并简化现场测量.
主要方法:
- 实现一个两阶段的哈达马德变换编码过程.
- 使用单像素探测器来收集光谱信息.
- 开发一种包含空间信息的重建方法,以消除对均照明的要求.
主要成果:
- 通过允许更多的光进入系统,实现了高吞吐量.
- 由于增加光收集,提高了信号噪声比.
- 展示了一种消除对均照明的需求的方法,有助于现场应用.
结论:
- 拟议的分散光谱仪为增强红外光谱学提供了一种新的方法.
- 哈达马德转换编码将光谱分辨率与吞吐量脱,提高了性能.
- 该系统的设计使得在不同波长的现场测量更容易实现.
相关概念视频
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
254
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....
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....
254
01:22Atomic Emission Spectroscopy: Instrumentation
527
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.
527