Nanosecond Photoemission near the Potential Barrier of a Schottky Emitter

Joshua L. Reynolds, Yonatan Israel, Adam J. Bowman, Brannon B. Klopfer, Mark A. Kasevich

Research output: Contribution to journalArticlepeer-review


Nanosecond electron pulses are appealing for ultrafast imaging and electron-gating applications, where tunable currents and narrow energy spreads are desirable. Here, we demonstrate photoemission from a Schottky emitter triggered by nanosecond laser pulses. Using photon energies optimally tuned to the emission potential barrier, we generate pulses containing over 105 electrons with energy spreads below 1 eV by means of a prompt single-photon photoemission process. These results are consistent with a theoretical model of laser-triggered electron emission and energetic broadening during propagation and can be widely implemented.

Original languageEnglish
Article number014035
JournalPhysical Review Applied
Issue number1
StatePublished - Jan 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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