The formation of the spatial spectrum of Airy beams under conditions of partial stopping of their aperture is studied theoretically and experimentally. It is shown that the structure of the field in the far field of exponential Airy beams depends on the relationship between the characteristic self-reconstruction length of the beams and the near boundary of the far field. If the boundary of the far field exceeds the reconstruction length, then the spatial structure of the field evolves through a stage of partial recovery of the initial beam, after which a far field is formed that differs substantially from that for an unperturbed beam. The distinctive feature of the field in the far field is a multipeak spatial structure with an envelope that is close to gaussian. Then the number of peaks equals the number of the stopped side maximum of the original Airy beam.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 81, No. 3, pp. 366–372, May–June, 2014.
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Khilo, N.A., Belyi, V.N., Kazak, N.S. et al. Far-Field Spatial Structure of a Diffracted Airy Beam with Stopping of Its Lateral Maxima. J Appl Spectrosc 81, 387–393 (2014). https://doi.org/10.1007/s10812-014-9942-5
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DOI: https://doi.org/10.1007/s10812-014-9942-5