Enhancement of Spin-Polarized Electron Emission from Strain-Compensated AlInGaAs-GaAsP Superlattices

Enhancement of Spin-Polarized Electron Emission from Strain-Compensated AlInGaAs-GaAsP Superlattices

Resonance enhancement of the quantum efficiency of new polarized electron photocathodes based on a short-period strain-compensated AlInGaAs/GaAsP superlattice structure is reported. The superlattice is a part of an integrated Fabry-Perot optical cavity. We demonstrate that the Fabry-Perot resonator...

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Veröffentlicht in:Proceedings of the 17th International Spin Physics Symposium (AIP Conference Proceedings Volume 915) 2007-01, Vol.915, p.1077-1080
Hauptverfasser: Roberts, J S, Yashin, Yu P, Mamaev, Yu A, Gerchikov, L G, Maruyama, T, Luh, D-A, Clendenin, J E
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Sprache:eng
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Zusammenfassung:Resonance enhancement of the quantum efficiency of new polarized electron photocathodes based on a short-period strain-compensated AlInGaAs/GaAsP superlattice structure is reported. The superlattice is a part of an integrated Fabry-Perot optical cavity. We demonstrate that the Fabry-Perot resonator enhances the quantum efficiency by up to a factor 10 in the wavelength region of the main polarization maximum. The high structural quality implied by these results points to the very promising application of these photocathodes for spin-polarized electron sources.
ISSN:0094-243X
DOI:10.1063/1.2750956