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Raman Spectroscopy Instrumentation: Overview

Raman Spectroscopy Instrumentation: Overview

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...

Raman Spectroscopy: Overview

Raman Spectroscopy: Overview

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 the...

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Related Experiment Video

Updated: Jul 6, 2026

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Published on: August 22, 2015

Comprehensive particle characterization from three-wavelength Raman-lidar observations: case study.

D Müller, U Wandinger, D Althausen

|March 25, 2008

Summary

Three-wavelength Raman-lidar measurements provide detailed optical and physical characterization of atmospheric particles. This technique enables estimation of particle size distribution and refractive index for improved atmospheric studies.

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A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

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Last Updated: Jul 6, 2026

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model

Published on: August 22, 2015

A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Area of Science:

Atmospheric optics
Remote sensing
Aerosol science

Background:

Atmospheric particles significantly influence Earth's climate and air quality.
Accurate characterization of aerosol optical and physical properties is crucial for climate modeling.

Purpose of the Study:

To demonstrate the capability of three-wavelength Raman-lidar for detailed atmospheric particle characterization.
To analyze optical and physical properties of aerosols using a case study.

Main Methods:

Utilized three-wavelength Raman-lidar measurements (355, 532, 1064 nm).
Applied an inversion scheme to backscatter and extinction coefficients.
Calculated vertical profiles of volume concentration distribution and complex refractive index.

Main Results:

Estimated vertical profiles of aerosol volume concentration distribution.
Determined the complex refractive index of atmospheric particles.
Calculated the single-scattering albedo.

Conclusions:

Three-wavelength Raman-lidar is effective for comprehensive aerosol characterization.
The study successfully retrieved key optical and physical properties of atmospheric particles.
This method enhances understanding of aerosol impacts on the atmosphere.