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Fast stimulated emission nanoscopy based on single molecule localization.

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    This study introduces stimulated emission (SE) to enhance single-molecule microscopy. This method boosts photon collection rates, enabling faster imaging and improved spatial resolution for super-resolution microscopy.

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    Area of Science:

    • Microscopy
    • Optical Physics
    • Biophysics

    Background:

    • Super-resolution microscopy requires high photon collection rates for improved spatial-temporal resolution.
    • Current methods face limitations in simultaneously enhancing imaging speed and resolution.

    Purpose of the Study:

    • To enhance signal intensity from single fluorescent molecules for super-resolution microscopy.
    • To improve the spatial-temporal resolution of imaging techniques.

    Main Methods:

    • Introduction of a stimulated emission (SE) optical process to enhance fluorescence probe signal intensity.
    • Utilizing SE in combination with single-molecule localization methodology.

    Main Results:

    • Demonstrated significant increase in photon emission rate with SE.
    • Showcased improved photon collection efficiency due to spatial coherence of SE photons.
    • Achieved fast imaging at 0.05 s per reconstructed image with ~30 nm lateral resolution.

    Conclusions:

    • Stimulated emission effectively enhances signal intensity in single-molecule localization microscopy.
    • The proposed method enables faster super-resolution imaging with high spatial resolution.
    • This approach offers a promising pathway for advancing super-resolution microscopy techniques.