This paper focuses on some experiments done using field emitter arrays (FEAs) produced at CEA-LETI, experiments which are outside of the display or microwave amplifier contexts. Among various studies done at CEA-LETI with FEAs we have selected:
- the search towards a spin polarized electron source,
- a study on the spatial coherence of the electron beam emitted by a single emitter,
- the incorporation of an optical command in a FEA and finally,
- the application of a FEA to electron injection into rare gas liquids.