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Distributed source model for the full-wave electromagnetic simulation of nonlinear terahertz generation

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dc.contributor.authorFumeaux, C.
dc.contributor.authorLin, H.
dc.contributor.authorSerita, K.
dc.contributor.authorWithayachumnankul, W.
dc.contributor.authorKaufmann, T.
dc.contributor.authorTonouchi, M.
dc.contributor.authorAbbott, D.
dc.date.issued2012
dc.description.abstractThe process of terahertz generation through optical rectification in a nonlinear crystal is modeled using discretized equivalent current sources. The equivalent terahertz sources are distributed in the active volume and computed based on a separately modeled near-infrared pump beam. This approach can be used to define an appropriate excitation for full-wave electromagnetic numerical simulations of the generated terahertz radiation. This enables predictive modeling of the near-field interactions of the terahertz beam with micro-structured samples, e.g. in a near-field time-resolved microscopy system. The distributed source model is described in detail, and an implementation in a particular full-wave simulation tool is presented. The numerical results are then validated through a series of measurements on square apertures. The general principle can be applied to other nonlinear processes with possible implementation in any full-wave numerical electromagnetic solver.
dc.description.statementofresponsibilityChristophe Fumeaux, Hungyen Lin, Kazunori Serita, Withawat Withayachumnankul, Thomas Kaufmann, Masayoshi Tonouchi, and Derek Abbott
dc.identifier.citationOptics Express, 2012; 20(16):18397-18414
dc.identifier.doi10.1364/OE.20.018397
dc.identifier.issn1094-4087
dc.identifier.issn1094-4087
dc.identifier.orcidFumeaux, C. [0000-0001-6831-7213]
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]
dc.identifier.orcidAbbott, D. [0000-0002-0945-2674]
dc.identifier.urihttp://hdl.handle.net/2440/74104
dc.language.isoen
dc.publisherOptical Soc Amer
dc.relation.granthttp://purl.org/au-research/grants/arc/FT100100585
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1095151
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0881445
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1097281
dc.rights© 2012 OSA
dc.source.urihttps://doi.org/10.1364/oe.20.018397
dc.subjectTerahertz imaging
dc.subjectSpectroscopy, terahertz
dc.subjectApertures
dc.subjectNear-field microscopy
dc.titleDistributed source model for the full-wave electromagnetic simulation of nonlinear terahertz generation
dc.typeJournal article
pubs.publication-statusPublished

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