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Phase mask for spatial and temporal control of ultrashort light pulses focused by lenses.

Authors
  • Zalvidea, Dobryna1
  • 1 Centro de Investigaciones Opticas, C. Correo 124, 1900 La Plata, Argentina. [email protected] , (Argentina)
Type
Published Article
Journal
Journal of the Optical Society of America. A, Optics, image science, and vision
Publication Date
Oct 01, 2003
Volume
20
Issue
10
Pages
1981–1986
Identifiers
PMID: 14570113
Source
Medline
License
Unknown

Abstract

The field amplitude associated with ultrashort light pulses was analyzed by using the phase-space formalism of the Wigner distribution function (WDF). The diffraction integral was properly modified to take into account the dispersion effects (up to second order). A two-dimensional WDF associated with a reduced pupil function was derived, from which the on-axis irradiance was obtained for varying times. A two-dimensional and rotationally symmetric quartic-phase mask to control the temporal stretching of femtosecond light pulses passing through optical systems was proposed and analyzed. A Gaussian spatial and temporal pulse passing through a single lens with and without the phase mask was investigated.

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