Spin-controlled vertical cavity surface-emitting lasers

Stephan Hövel, Nils C. Gerhardt, Carsten Brenner, Martin R. Hofmann, Fang-Yuh Lo, Dirk Reuter, Andreas D. Wieck, Ellen Schuster, Werner Keune

研究成果: 書貢獻/報告類型會議貢獻

1 引文 斯高帕斯(Scopus)

摘要

The output polarization of an optically pumped InGaAs/GaAs vertical cavity surface-emitting laser (VCSEL) is analyzed at room temperature as a function of the circular input polarization degree. The emission of the VCSEL is unambiguously controlled by the exciting polarization and only 30% of spin-polarized electrons are needed in the active region to generate an output polarization degree of up to 100% at short-pulsed pumping. This testifies that a VCSEL can be used as an effective amplifier for spin information even at room temperature. Measurements with a continuous wave excitation were executed to demonstrate the possibility of spin-amplification by electrical spin-injection in a VCSEL. All measurements were confirmed by a phenomenological spin flip model. Our paper is completed with the introduction of Fe/Tb-Multilayers used for spin injection. These contacts enable spin injection without external magnetic fields, i.e. in remanence. Finally, we suggest a combination of these multilayers with a VCSEL-structure to create the first spin-optoelectronic device working both at room temperature and without external fields.

原文英語
主出版物標題Semiconductor Lasers and Laser Dynamics II
DOIs
出版狀態已發佈 - 2006 八月 9
事件Semiconductor Lasers and Laser Dynamics II - Strasbourg, 法国
持續時間: 2006 四月 32006 四月 6

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
6184
ISSN(列印)0277-786X

其他

其他Semiconductor Lasers and Laser Dynamics II
國家法国
城市Strasbourg
期間06/4/306/4/6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • 引用此

    Hövel, S., Gerhardt, N. C., Brenner, C., Hofmann, M. R., Lo, F-Y., Reuter, D., Wieck, A. D., Schuster, E., & Keune, W. (2006). Spin-controlled vertical cavity surface-emitting lasers. 於 Semiconductor Lasers and Laser Dynamics II [61840Y] (Proceedings of SPIE - The International Society for Optical Engineering; 卷 6184). https://doi.org/10.1117/12.662411