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Related Experiment Video

Updated: Jun 16, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Reflection-type electrically controllable diffraction grating and its application to intracavity laser modulation.

H Sato, K Toda

    Applied Optics
    |February 20, 2010
    PubMed
    Summary
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    Researchers developed an electrically controllable diffraction (ECD) grating using electrooptic materials. This device achieved 30% intracavity modulation for a helium-neon laser with only 50 V.

    Area of Science:

    • Optoelectronics
    • Laser Technology
    • Materials Science

    Background:

    • Electrooptic materials offer tunable optical properties.
    • Diffraction gratings are crucial for light manipulation.
    • Controlling laser parameters like modulation is essential for applications.

    Purpose of the Study:

    • To construct an electrically controllable diffraction (ECD) grating.
    • To demonstrate its application in modulating a He-Ne laser.
    • To investigate the performance of the ECD grating at low applied voltages.

    Main Methods:

    • Utilized reflection of linearly polarized light from an electrooptic material.
    • Fabricated an interdigital electrode arrangement on the material.
    • Integrated the ECD grating into the resonator of a He-Ne 3.39-microm laser.

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    Last Updated: Jun 16, 2026

    Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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    Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale
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    Main Results:

    • Successfully constructed an electrically controllable diffraction grating.
    • Achieved 30% intracavity modulation for a He-Ne 3.39-microm laser.
    • Demonstrated effective grating operation with an applied voltage of 50 V.

    Conclusions:

    • The developed ECD grating is effective for laser modulation.
    • Electrooptic materials with interdigital electrodes are suitable for tunable diffraction devices.
    • Low voltage operation makes this technology practical for laser systems.