Orthogonally polarized bistable localized light structures in medium size vertical-cavity surface-emitting lasers

Due to current crowding, the laser emission in medium size VCSELs starts at threshold in a linearly polarized ldquoflower moderdquo concentrated at the laser aperture periphery. Introducing a holding beam with orthogonal liner polarization we observe localized structure in the center of the device i...

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Bibliographic Details
Main Authors: Panajotov, K., Hachair, X., Thienpont, H., Tissoni, G.
Format: Conference Proceeding
Language:English
Subjects:
Apertures
broad area VCSELs
cavity solitons
Laser beams
Laser modes
Laser theory
Optical polarization
Physics
polarization
Proximity effect
Solid lasers
Surface emitting lasers
Vertical cavity surface emitting lasers
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Description
Summary:Due to current crowding, the laser emission in medium size VCSELs starts at threshold in a linearly polarized ldquoflower moderdquo concentrated at the laser aperture periphery. Introducing a holding beam with orthogonal liner polarization we observe localized structure in the center of the device in the orthogonal polarization while the VCSEL keeps lasing in the same flower-mode. We support theoretically our experimental findings using two different VCSEL models, which account for both polarization and spatial dynamics.
ISSN:2162-7339
DOI:10.1109/ICTON.2009.5185271