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Opt Lett. 2011 Feb 1;36(3):382-4. doi: 10.1364/OL.36.000382.

Generation of broadly tunable sub-30-fs infrared pulses by four-wave optical parametric amplification.

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CNISM and Department of Physics and Mathematics, Università dell'Insubria, Como, Italy.


We report on the generation of sub-30-fs near-IR light pulses by means of broadband four-wave parametric amplification in fused silica. This is achieved by frequency downconversion of visible broadband pulses provided by a commercial blue-pumped beta-barium borate crystal-based noncollinear optical parametric amplifier. The proposed method produces the IR idler pulses with energy up to ∼20 μJ and tunable in wavelength from 1 to 1.5 μm. The shortest pulse duration is 17.6 fs, measured at 1.2 μm.

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