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Time-resolved cathodoluminescence in an ultrafast transmission electron microscope

Abstract : Ultrafast transmission electron microscopy (UTEM) combines sub-picosecond time-resolution with the versatility of TEM spectroscopies. It allows us to study the ultrafast materials' response using complementary techniques. However, until now, time-resolved cathodoluminescence was unavailable in UTEM. In this paper, we report time-resolved cathodoluminescence measurements in an ultrafast transmission electron microscope. We mapped the spatial variations of the emission dynamics from nano-diamonds with a high density of NV centers with a 12 nm spatial resolution and sub-nanosecond temporal resolution. This development will allow us to study the emission dynamics from quantum emitters with a unique spatiotemporal resolution and benefit from the wealth of complementary signals provided by transmission electron microscopes. It will further expand the possibilities of ultrafast transmission electron microscopes, paving the way to the investigation of the quantum aspects of an electron/sample interaction.
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https://hal.archives-ouvertes.fr/hal-03325447
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Submitted on : Tuesday, August 24, 2021 - 6:08:28 PM
Last modification on : Monday, July 4, 2022 - 9:45:50 AM
Long-term archiving on: : Friday, November 26, 2021 - 9:23:38 AM

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Sophie Meuret, L. H. G. Tizei, F. Houdellier, S. Weber, Y. Auad, et al.. Time-resolved cathodoluminescence in an ultrafast transmission electron microscope. Applied Physics Letters, American Institute of Physics, 2021, 119 (6), pp.062106. ⟨10.1063/5.0057861⟩. ⟨hal-03325447⟩

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