An ultrafast transmission electron microscope, developed by LUMES is available for experiments at LACUS.
The system is based on a modified conventional TEM, where photoelecton wavepackets are produced on a photocatode by the third Harmonic of a Ti:Sapphire laser. Electrons are then accelerated and trasmitted through a thin sample. The short wavelength of the electrons, allows for exceptional spatial resolution (few nm) and the short duration of the pulses is used for pump-probe measurements of materials.
The TEM is also equipped with an electron spectrometer to perform electron energy loss spectroscopy (EELS). This enables the resolve several type of microscopic materials excitations on an ultrafast time scale, as well as to prepare and observe free electron wave packets, prepared in engineered quantum states with light.
Learn more about the instrument and the related science on the dedicated webpage and on the following publications.
SCIENTIFIC PUBLICATIONS DESCRIBING THE TEM
Please note that the publication lists from Infoscience integrated into the EPFL website, lab or people pages are frozen following the launch of the new version of platform. The owners of these pages are invited to recreate their publication list from Infoscience. For any assistance, please consult the Infoscience help or contact support.
Principles and Implementation of an Ultrafast Transmission Electron Microscope
Microscopy and Microanalysis. 2012. Vol. 18, p. 600-601. DOI : 10.1017/S1431927612004850.Please note that the publication lists from Infoscience integrated into the EPFL website, lab or people pages are frozen following the launch of the new version of platform. The owners of these pages are invited to recreate their publication list from Infoscience. For any assistance, please consult the Infoscience help or contact support.
Design and implementation of a fs-resolved transmission electron microscope based on thermionic gun technology
Chemical Physics. 2013. Vol. 423, p. 79-84. DOI : 10.1016/j.chemphys.2013.06.026.Please note that the publication lists from Infoscience integrated into the EPFL website, lab or people pages are frozen following the launch of the new version of platform. The owners of these pages are invited to recreate their publication list from Infoscience. For any assistance, please consult the Infoscience help or contact support.