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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Length scales and polarization properties of annular standing waves in circular broad-area vertical-cavity surface-emitting lasers

Schulz-Ruhtenberg, M. and Tanguy, Y. and Jager, R. and Ackemann, T. (2009) Length scales and polarization properties of annular standing waves in circular broad-area vertical-cavity surface-emitting lasers. Applied Physics B: Lasers and Optics, 97 (2). pp. 397-403. ISSN 0946-2171

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Abstract

It is shown that the 'flower-like' emission patterns along the perimeter of broad-area circular vertical-cavity surface-emitting lasers can be interpreted in a first approximation as annular standing waves. Their modulation period follows the dispersion relation of tilted plane waves for a plano-planar cavity. For high enough divergence angle, they show a very peculiar polarization behavior of radial polarization in near field and azimuthal polarization in far field. The polarization selection is qualitatively explained by the breaking of the isotropy between s- and p-components for waves propagating off axis in the Bragg reflectors.