Phase compensation of azimuthally polarized J1 Bessel-Gaussian laser
Like other semiconductor lasers, Concentric-Circle-Grating, Surface-Emitting
lasers are compact, light, and efficient. However, unlike other semiconducor
lasers, they emit high power, low divergence azimuthally-polarized J1 Bessel-Gaussian
beams. Because of their azimuthal polarization, they have a null
at the center of the beam which makes them undesirable for certain applications.
In this paper, binary phase compensation, a lossless technique previously
used to improve the far field profile of linearly polarized Hermite-Gaussian
beams, is adapted to these azimuthally polarized beams to rid them of their
axial nulls, and improve their beam profile.
Date Created: January, 1998
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