Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices
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: https://orcid.org/0000-0003-2727-7395;-
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Item type: Article ID code: 28917 Dates: DateEvent8 November 2010PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 15 Nov 2011 15:32 Last modified: 08 Oct 2024 00:13 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/28917