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Related Experiment Video

Updated: Jun 13, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Diode laser direct modulation heterodyne interferometer.

K Tatsuno, Y Tsunoda

    Applied Optics
    |May 11, 2010
    PubMed
    Summary
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    A novel heterodyne interferometer uses direct diode laser modulation for precise measurements. This technology achieves high accuracy and repeatability, ideal for optical disk testing.

    Area of Science:

    • Optics and Photonics
    • Metrology
    • Laser Technology

    Background:

    • Interferometry is crucial for precise optical measurements.
    • Diode lasers offer tunable wavelength capabilities.
    • Wavefront aberration testing is vital for optical system performance.

    Purpose of the Study:

    • To develop a new heterodyne interferometer.
    • To achieve high measurement accuracy and repeatability.
    • To assess its suitability for optical disk systems.

    Main Methods:

    • Direct modulation of a diode laser wavelength.
    • Construction of a heterodyne interferometer setup.
    • Performance evaluation through accuracy and repeatability tests.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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    Related Experiment Videos

    Last Updated: Jun 13, 2026

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    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

    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
    07:56

    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

    Main Results:

    • Achieved measurement accuracy better than lambda/50.
    • Demonstrated repeatability of lambda/100.
    • Validated the interferometer's potential for wavefront aberration testing.

    Conclusions:

    • The developed diode laser heterodyne interferometer offers superior precision.
    • This technology is well-suited for testing optical disk wavefront aberrations.
    • Further applications in optical metrology are anticipated.