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Stability analysis of spin-polarized VCSELs

Al-Seyab, RK and Alexandropoulos, D and Henning, ID and Adams, MJ (2011) Stability analysis of spin-polarized VCSELs. In: UNSPECIFIED, ? - ?.

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Abstract

The ability to control the output polarization of spin-polarized VCSELs, by electrical injection and/or optical pumping of spin-polarized carriers, holds much potential for ultrafast all-optical elements. Research interest has been boosted by recent experimental demonstrations of electrically-pumped [1] and optically-pumped spin-VCSELs [2]. Such devices can exhibit rich dynamics due to the competition of spin-flip processes and birefringence. Stability maps for spin-VCSELs dynamics are reported here, for the first time to our knowledge, using the spin flip model (SFM) [3] and the largest Lyapunov exponent (LLE) method [4]. Our approach accounts for dichroism and birefringence with rates γ a and γ p , respectively, using the parameter set used in [5]. We choose fixed values of cavity decay rate κ= 125 ns 1 , carrier recombination rate γ = 1 ns 1 and a γ = 0. The stability maps are presented in terms of polarization ellipticity P and normalized amplitude η of the pumping (electrical or optical); only negative values of P are shown since the results are symmetric about P = 0. © 2011 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Clare Chatfield
Date Deposited: 20 Jan 2015 10:51
Last Modified: 17 Aug 2017 17:53
URI: http://repository.essex.ac.uk/id/eprint/9002

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