Investigates electron emissions using polarized laser beams from a GaAs cathode, indicating key factors affecting output.
We report on the photoemission of electrons from a GaAs cathode illuminated by a circular polarised laser beam. The maximum output current intensity was 28 mA with 8.8 mJ laser energy. The quantum yield was 1.5x10⁻⁷. This value was limited either to the GaAs work function or the optical transitions involved during the polarised light interaction. Measurements with a no-polarised laser beam were also performed.
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V. et al. (1999) studied this question.
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