Bessel beam spatially truncated |
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Authors: | Marcelino Anguiano-Morales,Didia P. Salas-Peimbert,David Monzon-Herná ndez |
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Affiliation: | a Instituto Tecnológico de Chihuahua, División de Estudios de Posgrado e Investigación, Av. Tecnológico No 2909, Chihuahua, Chih., México 31310b Centro de Investigaciones en Óptica, A. C. Lomas del Bosque No 115 Col Lomas del Campestre León, Gto. México 37150 |
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Abstract: | We present a study of spiral structures generated by superposition of a truncated Bessel beam and a plane wave. One of the main characteristics of spiral structures is that the shape of spiral beams remains unchanged upon propagation. The results of experimental observations using a Mach-Zehnder interferometer are compared with the numerically calculated intensity distribution. We show that when spiral beams are disturbed by a nontransparent obstacle, the amplitude of the transmitted field is distorted at nearby distances behind that obstacle, but during free-propagation, it regenerates to its initial form. |
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Keywords: | Bessel beam Wave propagation Axicon |
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