Room-temperature spin-controlled optoelectronic devices

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present three spin-dependent optoelectronic devices for spin controlled photonics working at room temperature. A spin controlled light emitting diode is demonstrated which exhibits spin injection through Fe/Tb-multilayers at room temperature and in remanence. Furthermore, we show that a classical vertical resonator laser can amplify spin information even at room temperature due to its nonlinearity at threshold. Accordingly, in combination with the injectors mentioned above it can be used as a spin-controlled emitter, allowing efficient spin-controlled polarization switching of its optical output. Due to the stability of light polarization in comparison to the spin orientation in a semiconductor, spin information can thus be transmitted over long distances and at room temperature with such devices. For detection of such spin information, we present a spin detector. It consists of a pin-diode with Fe/Tb-multilayer contacts and we show that it can create a polarization dependent spin-current also at room temperature and without applied magnetic fields.

Original languageEnglish
Title of host publication2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS
PublisherOptical Society of America
ISBN (Print)1557528594, 9781557528599
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventConference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS 2008 - San Jose, CA, United States
Duration: 2008 May 42008 May 9

Conference

ConferenceConference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS 2008
CountryUnited States
CitySan Jose, CA
Period08/5/408/5/9

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Hoevel, S., Gerhardt, N. C., Hofmann, M. R., Lo, F. Y., Reuter, D., Wieck, A. D., Schuster, E., & Keune, W. (2008). Room-temperature spin-controlled optoelectronic devices. In 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS [4551689] Optical Society of America. https://doi.org/10.1109/CLEO.2008.4551689