Generation, shaping, and characterization of intense femtosecond pulses tunable from 3 to 20 μm

Robert A. Kaindl, Matthias Wurm, Klaus Reimann, Peter Hamm, Andrew M. Weiner, Michael Woerner

Research output: Contribution to journalArticlepeer-review

268 Scopus citations

Abstract

We report on an intense mid-infrared light source that provides femtosecond pulses on a microjoule energy level, broadly tunable in the 3-20-μm wavelength range with pulse durations as short as 50 fs at 5 μm. The pulses are generated by phase-matched difference-frequency mixing in GaSe of near-infrared signal and idler pulses of a parametric device based on a 1-kHz Ti:sapphire amplifier system. Pulse durations are characterized with different techniques including autocorrelation measurements in AgGaS 2, two-photon absorption in InSb, and cross-correlation measurements with near-infrared pulses in a thin GaSe crystal. A subsequent zero-dispersion stretcher of high transmission allows for optimum pulse compression, a more detailed amplitude and phase characterization and, ultimately, amplitude shaping of the mid-infrared pulses.

Original languageEnglish (US)
Pages (from-to)2086-2094
Number of pages9
JournalJournal of the Optical Society of America B: Optical Physics
Volume17
Issue number12
DOIs
StatePublished - Dec 2000
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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