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We propose the simple and efficient generation of a compact azimuthally polarized laser beam.Radial silts with annular distribution are patteed onto the output facet of a standard vertical-cavity surface emitting laser.Due to the polarization modulation of the surface plasmon polariton mode excited by the radial slits,a compact azimuthally polarized laser beam at 850nm is experimentally demonstrated.The finite-difference time-domain method is introduced to analyze the polarization characteristics of the transmitted light through the radial slit,which agrees well with our experimental results.