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Related Concept Videos

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Related Experiment Video

Updated: Feb 20, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

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Optical sectioning in optical resolution photo acoustic microscopy.

Seongho Park, Jean-Claude Vial, Kwangseuk Kyhm

    Optics Express
    |October 19, 2017
    PubMed
    Summary

    This study introduces a new photoacoustic microscopy method achieving high axial resolution using only optical techniques. This optical resolution photoacoustic microscopy (OR-PAM) bypasses acoustic selectivity for enhanced imaging.

    Area of Science:

    • Biomedical Optics
    • Photoacoustic Imaging
    • Microscopy

    Background:

    • Traditional photoacoustic microscopy often relies on acoustic selectivity for axial resolution.
    • Achieving high resolution in photoacoustic microscopy typically involves complex acoustic detection systems.

    Purpose of the Study:

    • To present a novel concept for optical resolution photoacoustic microscopy (OR-PAM).
    • To demonstrate axial resolution solely through optical methods, eliminating acoustic selectivity.

    Main Methods:

    • Utilizing a two-step excitation process initiated by a single laser.
    • Employing excited state absorption for non-radiative relaxation to generate photoacoustic signals.
    • Validating the concept with Rhodamine and Zinc Tetraphenylporphyrin dyes.

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    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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    Last Updated: Feb 20, 2026

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    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
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    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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    Main Results:

    • Successfully achieved optical sectioning without acoustic selectivity.
    • Demonstrated full optical resolution in photoacoustic microscopy.
    • Confirmed the efficacy of the excited state absorption process for OR-PAM.

    Conclusions:

    • The proposed OR-PAM concept offers a new pathway for high-resolution imaging.
    • This optical-only approach simplifies photoacoustic microscopy systems.
    • The findings pave the way for advanced biomedical imaging applications.