High brightness picosecond electron gun

Journal Article · Mon Aug 15 00:00:00 EDT 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2008975· OSTI ID:20723106

Merano, M; Collin, S; Renucci, P; Gatri, M; Sonderegger, S; Crottini, A; Ganiere, J D; Deveaud, B ^[1]

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1. Institut de Photonique et d' Electronique Quantique, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

We have developed a high brightness picosecond electron gun. We have used it to replace the thermionic electron gun of a commercial scanning electron microscope (SEM) in order to perform time-resolved cathodoluminescence experiments. Picosecond electron pulses are produced, at a repetition rate of 80.7 MHz, by femtosecond mode-locked laser pulses focused on a metal photocathode. This system has a normalized axial brightness of 93 A/cm{sup 2} sr kV, allowing for a spatial resolution of 50 nm in the secondary electron imaging mode of the SEM. The temporal width of the electron pulse is 12 ps.

• OSTI ID: 20723106
• Journal Information: Review of Scientific Instruments, Vol. 76, Issue 8; Other Information: DOI: 10.1063/1.2008975; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BRIGHTNESS
CATHODOLUMINESCENCE
ELECTRON GUNS
ELECTRONS
MHZ RANGE 01-100
PHOTOCATHODES
PULSES
SCANNING ELECTRON MICROSCOPY
SPATIAL RESOLUTION
TIME RESOLUTION