Intrinsic spatial chirp of subcycle terahertz pulsed beams

Hine, George A.; Doleans, Marc

doi:10.1103/physreva.104.032229

Intrinsic spatial chirp of subcycle terahertz pulsed beams

Journal Article · Thu Sep 30 00:00:00 EDT 2021 · Physical Review A

DOI:https://doi.org/10.1103/physreva.104.032229· OSTI ID:1823356

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Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1823356

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 104; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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