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Related Experiment Video

Updated: Jan 4, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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Simultaneous multi-channel ultrasound detection via phase modulated pulse interferometry.

Yoav Hazan, Amir Rosenthal

    Optics Express
    |November 6, 2019
    PubMed
    Summary

    A novel phase-modulation scheme for pulse interferometry (PM-PI) enables parallel optical detection of ultrasound using high Q-factor resonators with non-overlapping spectra.

    Area of Science:

    • Optical Physics
    • Acoustics
    • Interferometry

    Background:

    • High Q-factor resonators enhance optical ultrasound detection sensitivity.
    • Conventional parallel interrogation requires spectral overlap, challenging for high Q-factor resonators.

    Purpose of the Study:

    • To develop a new method for parallel interrogation of optical resonators with non-overlapping spectra.
    • To enable sensitive ultrasound detection using multiple high Q-factor resonators simultaneously.

    Main Methods:

    • Phase-modulation scheme for pulse interferometry (PM-PI).
    • Utilizes non-overlapping resonator spectra for parallel interrogation.
    • Requires a single photodetector and sampling channel per ultrasound detector.

    Main Results:

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    Last Updated: Jan 4, 2026

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    • Demonstrated parallel ultrasound detection using four high Q-factor resonators.
    • Successfully implemented PM-PI for interrogating resonators with non-overlapping spectra.
    • Achieved sensitive ultrasound detection without spectral overlap.

    Conclusions:

    • The PM-PI method offers a viable solution for parallel interrogation of high Q-factor optical resonators.
    • This technique simplifies parallel ultrasound detection systems.
    • Enables enhanced sensitivity and parallel processing in optical ultrasound detection.