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Related Experiment Video

Updated: Jul 16, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Phase-only steerable photonic nanojets.

Mirza Karamehmedović, Jesper Glückstad

    Optics Express
    |September 15, 2023
    PubMed
    Summary
    This summary is machine-generated.

    Researchers numerically controlled the position of photonic nanojets (PNJs) using phase-only modulation. This method also improved PNJ confinement and calibration for enhanced optical applications.

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    Area of Science:

    • Optics and Photonics
    • Microscopy and Imaging

    Background:

    • Photonic nanojets (PNJs) are highly focused light beams with sub-diffraction-limit dimensions.
    • Controlling PNJ position and confinement is crucial for applications in microscopy, optical manipulation, and nanolithography.

    Purpose of the Study:

    • To numerically demonstrate the feasibility of controlling the axial and angular position of PNJs.
    • To show that phase-only modulation can be used to calibrate and improve PNJ confinement.

    Main Methods:

    • Numerical simulations were performed using a fixed 2D circular homogeneous dielectric micro-lens.
    • A fixed Gaussian beam was subjected to lossless phase-only modulation to control PNJ characteristics.

    Main Results:

    • Axial and angular control of PNJ position was successfully demonstrated.
    • The phase-only modulation technique was shown to effectively calibrate and enhance PNJ confinement.

    Conclusions:

    • Lossless phase-only modulation offers a viable method for precise control of photonic nanojets.
    • This technique provides a pathway for improved PNJ generation and calibration, advancing optical technologies.