Intrinsic spatial chirp of subcycle terahertz pulsed beams

Intrinsic spatial chirp of subcycle terahertz pulsed beams

Here, we present an analysis of spatial chirp in subcycle pulsed beams corroborated by spatiotemporal electro-optic sampling measurements of terahertz radiation. Modeling the subcycle pulsed beam as a superposition of monochromatic Gaussian beams, free-space propagation is shown to directly lead to...

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Veröffentlicht in:Physical review. A 2021-09, Vol.104 (3), Article 032229
Hauptverfasser: Hine, G. A., Doleans, M.
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description Here, we present an analysis of spatial chirp in subcycle pulsed beams corroborated by spatiotemporal electro-optic sampling measurements of terahertz radiation. Modeling the subcycle pulsed beam as a superposition of monochromatic Gaussian beams, free-space propagation is shown to directly lead to lateral spatial chirp with the spectrum on-axis substantially bluer than the overall energy spectrum. The two-transverse + one-temporal dimensional profile of terahertz subcycle pulsed beams from organic crystals DSTMS and OH1 are measured and compared with observed spatiospectral correlations consistent with the model.
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title Intrinsic spatial chirp of subcycle terahertz pulsed beams
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