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相关概念视频

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

330
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
330
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

299
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
299

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相关实验视频

Updated: Jun 14, 2025

Implementation of a Coherent Anti-Stokes Raman Scattering CARS System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope
12:54

Implementation of a Coherent Anti-Stokes Raman Scattering CARS System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

Published on: July 17, 2016

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低频连贯拉曼成像 坚固的光学散射.

David R Smith1, Jesse W Wilson2,3, Siddarth Shivkumar4,5

  • 1Biomedical Imaging, Morgridge Institute for Research, Madison, Wisconsin 53715, United States.

Chemical & biomedical imaging
|August 30, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了一种强大的冲动刺激拉曼散射 (ISRS) 成像方法,可以克服散射问题. 这种技术成功地从复杂的散射样本中捕获了高质量的拉曼光谱.

更多相关视频

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS
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相关实验视频

Last Updated: Jun 14, 2025

Implementation of a Coherent Anti-Stokes Raman Scattering CARS System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope
12:54

Implementation of a Coherent Anti-Stokes Raman Scattering CARS System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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科学领域:

  • 频谱学是一种光谱学.
  • 显微镜的使用方法
  • 光学是什么?光学是什么?光学是什么?

背景情况:

  • 冲动刺激拉曼散射 (ISRS) 使用探针光谱学捕获振动光谱.
  • 提取ISRS光谱需要将探针脉冲与脉冲分开,这在散射介质中具有挑战性.
  • 样品中的光学散射污染了探测器脉冲,阻碍了拉曼光谱的获取.

研究的目的:

  • 为复杂的散射样品开发一个强大的ISRS成像方法.
  • 在ISRS测量中克服脉冲污染.
  • 为了使在散射环境中实现高信号对噪声拉曼光谱采集.

主要方法:

  • 低频干涉测量冲动刺激拉曼散射 (ISRS) 成像的演示.
  • 实施一种新的方法,从分散的脉冲中分离探头脉冲.
  • 在具有多个散射层的复杂散射样本上测试该技术.

主要成果:

  • 实现了对光学散射引起的扭曲的高强度.
  • 从散射样本中成功获得了高信号对噪声ISRS光谱.
  • 证明了该方法的功能,即使和探头脉冲穿过许多散射层.

结论:

  • 开发的ISRS方法为分散样本中的振动光谱学提供了强大的解决方案.
  • 这种技术显著提高了ISRS显微镜在生物和材料科学中的适用性.
  • 高质量的拉曼光谱数据可以从以前无法访问的散射介质中可靠地获得.