Journal
APPLIED PHYSICS EXPRESS
Volume 11, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.11.053003
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Funding
- Advanced Photon Science Alliance from the Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Ministry of Internal Affairs and Communications (MIC) through the Strategic Information and Communications R&D Promotion Programme (SCOPE) [162103004]
- Japan Society for the Promotion of Science (JSPS) [17K14104]
- Japan Science and Technology Agency (JST)
- Murata Science Foundation
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We demonstrate arbitrary helicity control of circularly polarized light (CPL) emitted at room temperature from the cleaved side facet of a lateral-type spin-polarized light-emitting diode (spin-LED) with two ferromagnetic electrodes in an antiparallel magnetization configuration. Driving alternate currents through the two electrodes results in polarization switching of CPL with frequencies up to 100 kHz. Furthermore, tuning the current density ratio in the two electrodes enables manipulation of the degree of circular polarization. These results demonstrate arbitrary electrical control of polarization with high speed, which is required for the practical use of lateral-type spin-LEDs as monolithic CPL light sources. (C) 2018 The Japan Society of Applied Physics
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