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Related Concept Videos

Raman Spectroscopy: Overview01:20

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...
Raman Spectroscopy Instrumentation: Overview01:26

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...

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Related Experiment Video

Updated: Jun 14, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
09:57

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems

Published on: February 10, 2020

Stimulated Raman scattering: old physics, new applications.

Vladislav V Yakovlev1, Georgi I Petrov, Hao F Zhang

  • 1Department of Physics, University of Wisconsin - Milwaukee, Milwaukee, WI 53201, USA.

Journal of Modern Optics
|April 1, 2010
PubMed
Summary
This summary is machine-generated.

Stimulated Raman scattering offers a new way to tune ultrafast lasers. This technique also provides a powerful biomedical imaging method for selective and chemically-specific diagnostics.

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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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Last Updated: Jun 14, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
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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

Area of Science:

  • Optics and Photonics
  • Biomedical Imaging
  • Laser Technology

Background:

  • Ultrafast lasers are crucial for various scientific applications.
  • Current laser tuning methods have limitations.
  • Biomedical imaging requires non-invasive techniques with molecular specificity.

Purpose of the Study:

  • To explore stimulated Raman scattering (SRS) for enhancing ultrafast laser tunability.
  • To investigate SRS as a novel biomedical imaging modality.
  • To demonstrate the capability of SRS for selective excitation and chemical diagnostics.

Main Methods:

  • Utilizing SRS principles to modify laser output characteristics.
  • Developing and applying SRS-based microscopy techniques.
  • Analyzing spectral information for molecular identification.

Main Results:

  • Demonstrated significant expansion of ultrafast laser tunability using SRS.
  • Achieved selective excitation of molecular species.
  • Showcased chemically-specific diagnostics with high resolution.

Conclusions:

  • SRS is a highly promising technique for advancing ultrafast laser capabilities.
  • SRS offers a novel and effective approach for biomedical imaging and diagnostics.
  • This technology enables precise molecular analysis in biological samples.