Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices

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Li, M. Y. and Jahme, H and Soldat, H. and Gerhardt, N. C. and Hofmann, M. R. and Ackemann, T. (2010) Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices. Applied Physics Letters, 97 (19). 19191114. ISSN 0003-6951 (https://doi.org/10.1063/1.3515855)

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Abstract

We analyze the spin-induced circular polarization dynamics at the threshold of vertical-cavity surface-emitting lasers at room-temperature using a hybrid excitation combining electrically pumping without spin preference and spin-polarized optical injection. After a short pulse of spin-polarized excitation, fast oscillations of the circular polarization degree (CPD) are observed within the relaxation oscillations. A theoretical investigation of this behavior on the basis of a rate equation model shows that these fast oscillations of CPD could be suppressed by means of a reduction of the birefringence of the laser cavity.

ORCID iDs

Li, M. Y., Jahme, H, Soldat, H., Gerhardt, N. C., Hofmann, M. R. and Ackemann, T. ORCID logoORCID: https://orcid.org/0000-0003-2727-7395;
  • Item type:Article
    ID code:28917
    Dates:
    Date
    Event
    8 November 2010
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:15 Nov 2011 15:32
    Last modified:11 Nov 2024 09:38
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/28917
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