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Updated: Feb 14, 2026

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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Surface plasmon microscopy by spatial light switching for label-free imaging with enhanced resolution.
Optics Letters
|February 15, 2018
Summary
We developed spatially switched surface plasmon microscopy (ssSPM) for enhanced resolution. This label-free technique achieves super-resolution, significantly improving imaging beyond conventional methods.
Area of Science:
- Optics and Photonics
- Materials Science
- Microscopy
Background:
- Conventional surface plasmon microscopy (SPM) faces limitations in resolution.
- Achieving super-resolution in label-free microscopy is a significant challenge.
Purpose of the Study:
- To introduce and evaluate a novel microscopy technique, spatially switched surface plasmon microscopy (ssSPM).
- To demonstrate ssSPM's capability for enhanced resolution and super-resolution imaging.
Main Methods:
- Development of ssSPM utilizing two-channel momentum sampling.
- Performance evaluation using periodic nanowires.
- Comparison with conventional SPM and bright-field microscopy.
Main Results:
- ssSPM demonstrated a resolution enhancement of nearly 15 times compared to conventional SPM.
- The technique successfully achieved the diffraction limit and surpassed it for super-resolution.
Conclusions:
- ssSPM offers a simplified approach to achieving super-resolution in microscopy.
- This label-free technique significantly enhances imaging resolution beyond conventional limits.
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