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Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

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Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
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A two-mode thermomechanically squeezed phonon laser.

Nature communications·2026
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相关实验视频

Updated: Jun 7, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

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最明亮的多色声激光器.

Mishkat Bhattacharya1,2

  • 1School of Physics and Astronomy, Rochester Institute of Technology, Rochester, NY, USA. mxbsps@rit.edu.

Light, science & applications
|November 12, 2024
PubMed
概括

一个新的设备使用单色电子注射产生最明亮的多色声激光. 与现有技术相比,这种突破提供了十倍的功率和更窄的线宽.

科学领域:

  • 光学和光子学 在光学和光子学.
  • 激光物理 激光物理
  • 材料科学 材料科学 材料科学

背景情况:

  • 在先进的光学应用中,Phonon激光器至关重要.
  • 现有的多色声激光器在功率和光谱纯度方面存在局限性.
  • 开发更明亮,更高效的声激光源是一个活跃的研究领域.

研究的目的:

  • 介绍一种用于产生多色声激光器的新设备.
  • 为了实现显著增强功率和减少线宽在声波激光发射.
  • 为了展示一种使用单色电子注射的新方法.

主要方法:

  • 开发一种新设备,采用单色电子注射.
  • 发射的声激光器的光谱属性的表征.
  • 对输出功率和线路宽度与现有技术进行比较分析.

主要成果:

  • 该设备成功创建了一个多颜色的声激光器.
  • 与之前的设备相比,激光显示出10倍的功率输出.
  • 实现了显著更窄的线宽,表明了更好的光谱纯度.

结论:

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  • 单色电子注射是创建高性能多色声激光器的有效方法.
  • 开发的设备代表了声激光技术的重大进步.
  • 这一创新在需要高功率,光谱纯净光源的领域有潜在的应用.