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Related Concept Videos

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: May 8, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

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Published on: December 30, 2025

Broadband spectrum generation using continuous-wave Raman scattering.

J J Weber1, D D Yavuz

  • 1Department of Physics, University of Wisconsin at Madison, Madison, Wisconsin 53706, USA.

Optics Letters
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

We generated a wide, two-octave ro-vibrational Raman spectrum using molecular deuterium. This breakthrough spans wavelengths from 0.8 to 3.2 μm, achieved within a high-finesse cavity.

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Area of Science:

  • Nonlinear Optics
  • Spectroscopy
  • Quantum Optics

Background:

  • Generating broadband light sources is crucial for spectroscopy and optical communications.
  • Cavity-enhanced nonlinear processes can significantly improve light generation efficiency and spectral coverage.

Purpose of the Study:

  • To experimentally demonstrate a continuous-wave (CW) ro-vibrational Raman spectrum with an unprecedented two-octave spectral width.
  • To explore the generation of broadband light in the 0.8 to 3.2 μm range using molecular deuterium.

Main Methods:

  • Utilizing a high-finesse optical cavity to enhance nonlinear interactions.
  • Employing low-pressure molecular deuterium as the nonlinear medium.
  • Generating a continuous-wave pump for the Raman process.

Main Results:

  • Achieved a two-octave-wide ro-vibrational Raman spectrum.
  • Observed spectral components spanning from 0.8 μm to 3.2 μm.
  • Demonstrated efficient broadband light generation in molecular deuterium.

Conclusions:

  • Continuous-wave, cavity-enhanced Raman generation in molecular deuterium is a viable method for producing ultra-broadband spectra.
  • The demonstrated spectral range opens possibilities for new spectroscopic applications and optical frequency comb generation.