Intense sub-two-cycle infrared pulse generation via phase-mismatched cascaded nonlinear interaction in DAST crystal

Octave-spanning, 12.5 fs, (1.9 cycle) pulses with 115 μJ energy in the short-wavelength mid-infrared spectral range (1-2.5 μm) have been generated via phase-mismatched cascaded nonlinear frequency conversion using organic DAST (4-N, N-dimethylamino-4'-N'-methylstilbazolium tosylate) crysta...

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Bibliographic Details
Published inOptics letters Vol. 39; no. 9; p. 2660
Main Authors Trisorio, A, Divall, M, Monoszlai, B, Vicario, C, Hauri, C P
Format Journal Article
LanguageEnglish
Published United States 01.05.2014
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Summary:Octave-spanning, 12.5 fs, (1.9 cycle) pulses with 115 μJ energy in the short-wavelength mid-infrared spectral range (1-2.5 μm) have been generated via phase-mismatched cascaded nonlinear frequency conversion using organic DAST (4-N, N-dimethylamino-4'-N'-methylstilbazolium tosylate) crystal. Such ultrafast cascading effect is ensured by the interaction of a pump pulse with the exceptionally large effective nonlinearity of the DAST crystal and experiencing nonresonant, strongly phase-mismatched, Kerr-like negative nonlinearity.
ISSN:1539-4794
DOI:10.1364/OL.39.002660