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Related Concept Videos

Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
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Related Experiment Video

Updated: Jul 9, 2026

Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals
07:34

Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

Published on: August 22, 2019

All-solid-state, tunable, single-frequency source of yellow light for high-resolution spectroscopy.

T Petelski, R S Conroy, K Bencheikh

    Optics Letters
    |November 28, 2007
    PubMed
    Summary

    We developed a tunable visible light source using a frequency-doubled optical parametric oscillator. This laser system provides stable, narrow-linewidth output for advanced spectroscopy applications.

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    Last Updated: Jul 9, 2026

    Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals
    07:34

    Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

    Published on: August 22, 2019

    Area of Science:

    • Atomic, Molecular, and Optical Physics
    • Laser Physics
    • Spectroscopy

    Background:

    • High-resolution spectroscopy requires stable, tunable, narrow-linewidth light sources in the visible spectrum.
    • Existing sources may lack the required power, tunability, or stability for demanding spectroscopic studies.

    Purpose of the Study:

    • To demonstrate a novel continuous-wave (cw) doubly resonant optical parametric oscillator (OPO) frequency-doubled to the visible range.
    • To characterize the performance of this visible light source for spectroscopic applications.

    Main Methods:

    • Utilized a cw doubly resonant optical parametric oscillator (OPO).
    • Employed an external resonant cavity for frequency doubling the OPO output.
    • Investigated persistent hyperfine spectral hole-burning spectroscopy of Europium-doped Yttrium Orthosilicate (Eu3+:Y2SiO5).

    Main Results:

    • Achieved single-frequency visible radiation (565-590 nm) with up to 3.8 mW power.
    • Demonstrated continuous tunability over 18 GHz and step tunability over 160 GHz.
    • Successfully performed persistent hyperfine spectral hole-burning spectroscopy, enabling studies of spectral hole lifetimes over several hours.

    Conclusions:

    • The developed frequency-doubled OPO is a robust and versatile source for high-resolution visible spectroscopy.
    • Its reliable operation and tunable output are well-suited for detailed studies of spectral properties in solid-state materials.
    • This technology opens new avenues for precise spectroscopic investigations.