Anomalous spectral behavior of vectorial apertured ultrashort pulsed beams beyond the paraxial approximation

Based on the vectorial Rayleigh diffraction integrals, the analytical expression for the spectral intensity of a vectorial nonparaxial ultrashort pulsed Gaussian beam diffracted at a circular hard-aperture is derived. The effect of f-parameter ( f = 1/ k 0 w 0) on the spectral anomalies near phase s...

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Bibliographic Details
Published inOptics communications Vol. 281; no. 4; pp. 521 - 526
Main Authors Yang, Yuanjie, Duan, Kailiang, Li, Yude
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.02.2008
Elsevier Science
Subjects
Circular aperture
Diffraction and scattering
Exact sciences and technology
f-Parameter
Fundamental areas of phenomenology (including applications)
Optics
Physics
Spectral switch
Vector Rayleigh diffraction integrals
Vectorial nonparaxial ultrashort pulse
Wave optics
Vector Rayleigh diffraction integrals
Circular aperture
f-Parameter
Spectral switch
Vectorial nonparaxial ultrashort pulse
Electromagnetic wave diffraction
Singular optics
Theoretical study
Geometrical optics
Diffraction integral
Gaussian beam
Ultrashort pulse
Pulsed beam
Analytical solution
Phase singularity
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Summary:Based on the vectorial Rayleigh diffraction integrals, the analytical expression for the spectral intensity of a vectorial nonparaxial ultrashort pulsed Gaussian beam diffracted at a circular hard-aperture is derived. The effect of f-parameter ( f = 1/ k 0 w 0) on the spectral anomalies near phase singularities of the vectorial nonparaxial ultrashort pulsed beams is studied. It is shown that the spectral switch near the phase singularity of diffracted vectorial nonparaxial ultrashort pulsed beam still exists beyond paraxial regime, but disappears when the f-parameter is larger than a certain value.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2007.10.020