Influence of spatiotemporal coupling induced by an ultrashort laser pulse shaper on a focused beam profile

Takasumi Tanabe, Fumihiko Kannari, Frank Korte, Jürgen Koch, Boris Hichkov

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

4f pulse shapers have been widely used to temporally manipulate femtosecond optical pulses by spectral filtering. When the temporal waveform is manipulated with a spatial light modulator consisting of segmented pixels, the spatial profile of the output beam also varies because of diffraction at the pixel array, which is known as a spatiotemporal coupling effect. This effect produces a complicated spatio-temporal profile near the focus of the ultrashort pulses, which may affect the interpretation of experimental results obtained with shaped ultrashort pulses. We investigate the spatial intensity distribution at the focus of temporally shaped pulses through ablation experiments. The three-dimensional space-time beam profile is also numerically calculated.

Original languageEnglish
Pages (from-to)1092-1098
Number of pages7
JournalApplied Optics
Volume44
Issue number6
DOIs
Publication statusPublished - 2005 Feb 20

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shapers
Ultrashort pulses
Pixels
profiles
Ablation
pulses
lasers
Laser pulses
Diffraction
pixels
light modulators
Experiments
ablation
waveforms
output
diffraction
Spatial light modulators

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Influence of spatiotemporal coupling induced by an ultrashort laser pulse shaper on a focused beam profile. / Tanabe, Takasumi; Kannari, Fumihiko; Korte, Frank; Koch, Jürgen; Hichkov, Boris.

In: Applied Optics, Vol. 44, No. 6, 20.02.2005, p. 1092-1098.

Research output: Contribution to journalArticle

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