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Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser

Cemlyn, Benjamin R and Henning, Ian D and Adams, Michael J and Harbord, Edmund and Oulton, Ruth and Korpijarvi, Ville-Markus and Guina, Mircea (2019) 'Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser.' IEEE Journal of Quantum Electronics, 55 (6). pp. 1-9. ISSN 0018-9197

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The polarisation properties of a quantum well spin - vertical cavity surface emitting laser (spin - VCSEL), both without injection and with variable polarisation optical injection, are investigated experimentally and compared with the spin flip model (SFM). Without injection, we demonstrate two distinct types of VCSEL-pump response depending on the signs of the linewidth enhancement factor, birefringence and dichroism: firstly where the pump and VCSEL have the same sign of the ellipticity, and secondly where the VCSEL ellipticity, accompanied by the linear polarisation, switches sign. We show that by controlling the injected power, ellipticity or linear angle, near circular polarisation can be obtained. These responses both give insight into the electro-optical injected spin-VCSEL system, and have practical implications for the use of spin VCSELs in unique applications exploiting the ellipticity degree of freedom.

Item Type: Article
Uncontrolled Keywords: Vertical cavity surface emitting lasers; Optical fibers; Optical polarization; Optical pumping; Mathematical model; Stimulated emission; VCSEL; spin; polarization; injection
Divisions: Faculty of Science and Health
Faculty of Science and Health > Life Sciences, School of
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 26 Mar 2020 12:58
Last Modified: 23 Sep 2022 19:36

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