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Related Experiment Video

Updated: May 22, 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

High passive-stability diode-laser design for use in atomic-physics experiments.

Eryn C Cook1, Paul J Martin, Tobias L Brown-Heft

  • 1Department of Physics and Oregon Center for Optics, 1274 University of Oregon, Eugene, Oregon 97403-1274, USA.

The Review of Scientific Instruments
|May 8, 2012
PubMed
Summary
This summary is machine-generated.

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We developed a stable, low-cost external-cavity diode laser system. Its robust design and vacuum sealing offer superior performance for various applications.

Area of Science:

  • Optical Engineering
  • Laser Physics
  • Instrumentation

Background:

  • High-stability diode lasers are crucial for scientific research and industry.
  • Existing commercial systems often have high costs and limited accessibility.
  • A need exists for a robust, low-cost, and easily assembled laser system.

Purpose of the Study:

  • To design and characterize a novel external-cavity diode-laser system.
  • To optimize the system for high stability, low spectral linewidth, and affordability.
  • To ensure ease of in-house assembly and adaptability to various wavelengths.

Main Methods:

  • Machining the main cavity from a single aluminum block for thermal and mechanical stability.
  • Implementing a stiff, lightweight diffraction-grating arm to minimize resonances.

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  • Utilizing vacuum sealing and a custom silicone housing for environmental isolation.
  • Integrating beam shaping, optical isolation, and fiber coupling.

    • Main Results:

    • The system demonstrates high stability and a low passive spectral linewidth.
    • Performance metrics exceed those of comparable commercial precision diode-laser systems.
    • The design is robust against temperature fluctuations and mechanical vibrations.
    • The system is adaptable to commonly used wavelengths.

    Conclusions:

    • The presented external-cavity diode-laser design offers superior performance at a lower cost.
    • Its robust construction and ease of assembly make it accessible for in-house fabrication.
    • The freely available documentation facilitates widespread adoption and further development.