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Related Experiment Video

Updated: Jun 10, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Tunable diode-laser-pumped solid state LNA laser for helium spectroscopic experiments.

T Chuang, H J Metcalf

    Applied Optics
    |August 12, 2010
    PubMed
    Summary
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    We developed a compact, stable solid-state laser for exciting helium (He) resonance lines. This laser offers good frequency stability and tunable, single-mode operation for spectroscopic applications.

    Area of Science:

    • Atomic physics
    • Laser spectroscopy
    • Quantum optics

    Background:

    • Helium (He) resonance lines are crucial for various spectroscopic applications.
    • Developing compact and stable laser sources for exciting these lines is essential.

    Purpose of the Study:

    • To design, build, and test a compact, integrated, single-mode solid-state laser.
    • To utilize a semiconductor laser array for pumping the He resonance line at 1.083 microm.
    • To achieve good frequency stability and pure transverse mode operation.

    Main Methods:

    • A compact, integrated, single-mode solid-state laser was constructed.
    • Semiconductor laser array was used for pumping the He resonance line.
    • An intracavity etalon was employed for single longitudinal mode tuning.

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  • Saturated absorption spectroscopy was used to measure stability and tuning range.

    • Main Results:

    • The laser demonstrated good frequency stability and nearly pure TEM(00) transverse mode operation.
    • Single longitudinal mode operation with a linewidth of approximately 5 MHz was achieved.
    • The laser was successfully tuned around the metastable He resonance transition.

    Conclusions:

    • A compact and stable solid-state laser system for exciting the He resonance line has been successfully developed.
    • The laser's design facilitates good frequency stability and tunable, single-mode operation.
    • This laser is suitable for applications requiring precise excitation of the He resonance transition.