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Bessel Beams
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Bessel Beams
classification
physics.optics
keywords
beamsbessellightspeedvelocitybeamderiveddiffraction
read the original abstract
Scalar Bessel beams are derived both via the wave equation and via diffraction theory. While such beams have a group velocity that exceeds the speed of light, this is a manifestation of the "scissors paradox" of special relativty. The signal velocity of a modulated Bessel beam is less than the speed of light. Forms of Bessel beams that satisfy Maxwell's equations are also given.
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