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The transmission properties of the light through the glass convex lens can be analyzed by classical theory. In quasi-optical technology, the Gaussian beam transmitting through the dielectric convex lens can be analyzed by the paraxial theory. The lens can convert a divergent Gaussian beam into convergent and the beam waist radius of the output beam can be determined by the incident beam and the focal...
A dielectric phase-shifting lens, which can convert an incident Gaussian beam in millimeter wave band to be a Bessel beam, is designed. The phase-shifting lens is a dielectric disc filled with different unit cell, which drilled with air holes with different diameters in the dielectric substrate. The transverse intensity pattern of the generated Bessel beam is plotted, which shows that the phase-shifting...
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