Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
735942 | Optics and Lasers in Engineering | 2008 | 5 Pages |
Abstract
Starting from the Huygens–Fresnel diffraction integral, the analytical expression for the power spectrum of pulsed Bessel beams focused by a dispersive aperture lens is derived and used to study the spectral anomalies of pulsed Bessel beams in the focused field. Numerical calculation results are given to illustrate the dependence of spectral anomalous behavior on the pulse parameters, truncation parameter and material dispersion of the lens. It is shown that near the phase singularities the spectral anomalies may take place. The potential applications of spectral anomalies of ultrashort pulsed beams in information encoding and information transmission are considered.
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Electrical and Electronic Engineering
Authors
Liuzhan Pan, Chaoliang Ding, Xiao Yuan, Baida Lü,