Instrumentation used to image excitons

The instrument uses an initial pump pulse of light to excite electrons and generate excitons. This is rapidly followed by a second pulse of light that used extreme ultraviolet photons to kick the electrons within excitons out of the material and into the vacuum of an electron microscope. The electron microscope then measures the energy and angle that the electrons left the material to determine the momentum of the electron around the hole within the exciton.

The instrument uses an initial pump pulse of light to excite electrons and generate excitons. This is rapidly followed by a second pulse of light that used extreme ultraviolet photons to kick the electrons within excitons out of the material and into the vacuum of an electron microscope. The electron microscope then measures the energy and angle that the electrons left the material to determine the momentum of the electron around the hole within the exciton.

Date:
21 April 2021

Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).

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