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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.9K
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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Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

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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...
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Phase offset and polarisation flipping in diamond Raman lasers with intracavity second harmonic generation.

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Updated: Apr 12, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
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Modelling and optimization of continuous-wave external cavity Raman lasers.

Ondrej Kitzler, Aaron McKay, David J Spence

    Optics Express
    |May 14, 2015
    PubMed
    Summary

    We developed a model for a diamond Raman laser

    Area of Science:

    • Laser physics
    • Materials science

    Background:

    • Diamond Raman lasers offer high power potential.
    • Understanding operational limits is crucial for optimization.

    Purpose of the Study:

    • To present an analytical model for a 23 W quasi-continuous-wave diamond Raman laser.
    • To guide optimization of first Stokes output power.

    Main Methods:

    • Developed an analytical model.
    • Analyzed power and efficiency dependencies.
    • Investigated resonator and crystal parameters.

    Main Results:

    • Identified key parameters for efficient operation: strong focusing, low output coupling, and low-absorption crystals.
    • Predicted benefits of increased output coupling for damage-free operation at higher pump powers by limiting intracavity fields.

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    Conclusions:

    • The model effectively describes diamond Raman laser performance.
    • Optimization strategies are provided for enhanced power and efficiency.