期刊
APPLIED PHYSICS LETTERS
卷 96, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3292581
关键词
copper; high-speed optical techniques; laser beam effects; multiphoton processes; photoemission; space charge; thermionic electron emission
资金
- FWO
In this theoretical study, the electron emission from a copper surface under ultrashort pulsed laser irradiation is investigated using a one-dimensional particle in cell model. Thermionic emission as well as multiphoton photoelectron emission were taken into account. The emitted electrons create a negative space charge above the target; consequently the generated electric field reduces the electron emission by several orders of magnitude. The simulations indicate that the space charge effect should be considered when investigating electron emission related phenomena in materials under ultrashort pulsed laser irradiation of metals.
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