Emission of cylindrical and elliptical vector beams from radial Bragg Lasers

摘要

Radially and azimuthally polarized beams are shown to be naturally emitted from radial Braggnlasers depending on the supported polarization in the cavity u0002TE or TMu0003. The impact of structurenimperfection and deviation from a circular shape on the lasing properties is investigated, showing anred-shift in the resonance frequency, and a modification of the radial/azimuthal polarization profilenforming elliptical vector beams. The comparison of the analysis to the experimental results indicatesnthat the fabricated lasers are not perfectly circular with ellipticity in the order of 1%.