Aberration and self-reconstruction of zero-order Bessel beams in isolated and array format generated using positive and negative axicon lenses
Résumé
Bessel beam arrays, which can be created involving multiple axicons, diffractive elements, and interference effects, can experience several types of aberrations that distort their ideal characteristics, limiting their applications in microscopy, photonics, and material processing. For instance, Tilt aberration occurs when the individual axicons or optical elements in the Bessel beam array generation setup are misaligned or tilted relative to each other. This tilt can affect the beam's quality, focusing ability, and propagation characteristics. The present study experimentally investigated how any tilt associated with the axicon lens (of both positive and negative surface profile) affects the spatial characteristics of Bessel beams in isolated as well as in array formats. In particular, the aberration characteristics of [1x7] Bessel beam arrays of conical half-angle up to 11 degrees were studied. The spatial filtering of Bessel beam arrays was also demonstrated.
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Domaines
Physique [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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