Highly Effective Polarized Electron Sources Based on Strained Semiconductor Superlattice with Distributed Bragg Reflector

Conference · Wed Nov 28 00:00:00 EST 2007

DOI:https://doi.org/10.1063/1.2888077· OSTI ID:920278

Gerchikov, L G; Aulenbacher, K; Clendenin, J E; Kuz'michev, V V; Mamaev, Yu A; Maruyama, T; Mikhrin, V S; Roberts, J S; Utstinov, V M; Vasiliev, D A; Vasiliev, A P; Yashin, Yu P; Zhukov, A E

Resonance enhancement of the quantum efficiency of new polarized electron photocathodes based on a short-period strained superlattice structures 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 the order of magnitude 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.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 920278
• Report Number(s): SLAC-PUB-12980; TRN: US0807379
• Resource Relation: Journal Volume: 980; Conference: Presented at 12th International Workshop on Polarized Sources and Targets (PST 2007), Upton, New York, 10-14 Sep 2007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ELECTRON SOURCES
POLARIZATION
PHOTOCATHODES
QUANTUM EFFICIENCY
RESONANCE
RESONATORS
SUPERLATTICES
Accelerators
ACCPHY
MATSCI