Angular dispersion and temporal change of femtosecond pulses from misaligned pulse compressors

Károly Osvay, Attila P. Kovács, Zsuzsanna Heiner, Gábor Kurdi, József Klebniczki, Márta Csatári

Research output: Contribution to journalArticle

90 Citations (Scopus)


A misaligned stretcher or compressor in a chirped pulse amplification laser introduces residual angular dispersion into the beam, resulting in temporal distortion of the pulse. We demonstrate that an imaging spectrograph is capable for measuring the angular dispersion of a laser beam by an accuracy of 0.2 μrad/nm. Using this technique, the analytical expressions of residual angular dispersion of misaligned prism and grating compressors are experimentally proved. Temporal degradations of short pulses due to angular dispersion are studied by measuring the temporal stretch of 16-fs pulses, while the issues of contrast deterioration are also discussed. It is proved that the simultaneous measurement of angular dispersion and pulse duration offers the most precise alignment procedure of prismatic and grating compressors.

Original languageEnglish
Pages (from-to)213-220
Number of pages8
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number1
Publication statusPublished - Jan 1 2004


  • Optical pulse compression
  • Pulse characterization
  • Pulse temporal contrast
  • Ultrafast optics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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