Portal de Periódicos da CAPES

<title>Study of the Bessel beams with opaque obstructions along the propagation direction</title>

2004; SPIE; Linguagem: Inglês

10.1117/12.591722

1996-756X

Marcelino Anguiano-Morales, Sandra E. Balderas-Mata, Marcela Maribel Méndez Otero, S. Chávez-Cerda, M. D. Iturbe Castillo,

Microfluidic and Bio-sensing Technologies

We study the property of propagation beams disturbed by an opaque obstacle. The fronts of the Hankel waves are disturbed and beyond the obstacle they are reconstructed. We report the observation of two shadow produced by the obstacle, and the fact that the Bessel beam is formed of ingoing and outgoing conical waves. We numerically solve the Helmholtz equation to show the evolution and the reconstruction of the Bessel beam and we demonstrate the correspondence of these results with the experimental part.