Abstract
An accelerating beam with a Gaussian transverse profile can preserve its shape while propagating along a quarter of a circle. When an off-axis spiral phase is imposed, however, the beam will have an additional acceleration perpendicular to the circle. A two-dimensional accelerating beam is constructed and is found to accelerate along both the and the directions, but its transverse intensity profile cannot be maintained well due to the interaction of accelerations along different directions. The intensity profile can be improved by imposing two off-axis spiral phases onto the input beam.
© 2014 Optical Society of America
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