Broadband THz Pulse Non-Colinear Parametric Detection in Slab Lithium Niobate Waveguide

Gabriel Gandubert; Joel Edouard Nkeck; Jonathan Lafreniere-Greig; Xavier Ropagnol; Francois Blanchard

doi:10.1109/PN70808.2026.11657691

Broadband THz Pulse Non-Colinear Parametric Detection in Slab Lithium Niobate Waveguide

Gabriel Gandubert
, Joel Edouard Nkeck
, Jonathan Lafreniere-Greig
, Xavier Ropagnol
, Francois Blanchard

Ecole de technologie supérieure (ETS)
École de technologie supérieure
École de technologie supÉrieure (ÉTS)

Résultats de recherche: Contribution à un journal › Article de conférence › Revue par des pairs

Résumé

Non-colinear parametric detection of broadband terahertz (THz) waves enable high-sensitivity detection through spatial separation of sum- and difference-frequency generation (SFG and DFG). This approach provides an efficient route to sensitive and frequency-resolved THz detection. In this work, we demonstrate non-colinear THz parametric detection using a 20-μ m-thick lithium niobate slab waveguide, where phase matching is governed by the effective THz refractive index of the waveguide rather than the bulk crystal.

langue originale	Anglais
journal	Photonics North, PN
Numéro de publication	2026
Les DOIs	https://doi.org/10.1109/PN70808.2026.11657691
état	Publié - 2026
Evénement	2026 Photonics North, PN 2026 - Quebec City, Canada Durée: 2 juin 2026 → 5 juin 2026

Accès au document

10.1109/PN70808.2026.11657691

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abstract = "Non-colinear parametric detection of broadband terahertz (THz) waves enable high-sensitivity detection through spatial separation of sum- and difference-frequency generation (SFG and DFG). This approach provides an efficient route to sensitive and frequency-resolved THz detection. In this work, we demonstrate non-colinear THz parametric detection using a 20-μ m-thick lithium niobate slab waveguide, where phase matching is governed by the effective THz refractive index of the waveguide rather than the bulk crystal.",

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AU - Nkeck, Joel Edouard

AU - Lafreniere-Greig, Jonathan

AU - Ropagnol, Xavier

AU - Blanchard, Francois

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AB - Non-colinear parametric detection of broadband terahertz (THz) waves enable high-sensitivity detection through spatial separation of sum- and difference-frequency generation (SFG and DFG). This approach provides an efficient route to sensitive and frequency-resolved THz detection. In this work, we demonstrate non-colinear THz parametric detection using a 20-μ m-thick lithium niobate slab waveguide, where phase matching is governed by the effective THz refractive index of the waveguide rather than the bulk crystal.

KW - Nonlinear optics

KW - Parametric detection

KW - Terahertz detection

KW - Thin-film lithium niobate

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DO - 10.1109/PN70808.2026.11657691

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JO - Photonics North, PN

JF - Photonics North, PN

IS - 2026

T2 - 2026 Photonics North, PN 2026

Y2 - 2 June 2026 through 5 June 2026

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