Cathodoluminescence, light injection and EELS in STEM: from comparative to coincidence experiments
Luiz H G Tizei1, Yves M Auad1, Florian Castioni1
1CNRS, Laboratoire de Physique des Solides, Univ. Paris-Saclay, Orsay 91405, France.
Microscopy (Oxford, England)
|October 27, 2025
Summary
Temporal coincidence experiments using electron spectroscopy in electron microscopes reveal material properties at the atomic scale. These advanced techniques offer unique insights, especially for nano-optics applications.
Area of Science:
- Materials Science
- Spectroscopy
- Nanotechnology
Background:
- Electron spectroscopy in electron microscopes offers atomic-scale insights into material properties.
- Current methods provide data on chemical, electronic, vibrational, and optical characteristics.
Purpose of the Study:
- To review temporal coincidence experiments combining different electron spectroscopies.
- To highlight the unique information obtainable from these techniques, particularly in nano-optics.
- To discuss instrumental requirements and future prospects.
Main Methods:
- Utilizing temporal coincidence experiments in the nanosecond to femtosecond range.
- Combining various electron spectroscopies: photon, inelastic electron, and secondary electron spectroscopies.
- Implementing these techniques within electron microscopes for high spatial resolution.
Main Results:
- Coincidence experiments yield information inaccessible to independent spectroscopies.
- Demonstrated applicability and advantages in nano-optics.
- Identified necessary instrumental modifications for advanced coincidence measurements.
Conclusions:
- Temporal coincidence electron spectroscopy significantly enhances material characterization capabilities.
- These techniques are crucial for advancing nano-optics research.
- Further development promises expanded applications in nanoscale science.
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