Distortion of femtosecond laser pulses in lenses

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Large temporal front distortion of femtosecond pulses occurs in lenses having chromatic aberration. The effect is due to the difference between the phase and group velocities. Equations describing the pulse-front delay in singlet lenses, achromats, and compound lenses are presented. The pulse-front delay is several orders of magnitude larger than the broadening caused by group-velocity dispersion in the lens material. Delays occurring in Fresnel-type zone plates are also described.

Original languageEnglish
Pages (from-to)119-121
Number of pages3
JournalOptics Letters
Issue number2
Publication statusPublished - Jan 15 1989


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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