Event detection via THz generation with flat nonlinear optics [Invited]
Event detection is a key feature in many applications and is often achieved digitally by comparing sequential frames and detecting changes or patterns that signify an event. While digital systems dominate most applications, optical analog methods are receiving increasing attention in areas requiring speed or operation in challenging conditions. Here we demonstrate how a simple thin film of AlGaAs can be used to realize ultrafast event detection by exploiting the THz signal generated by the difference-frequency of optical events.
Authors
- Unai Arregui Leon (ORCID: https://orcid.org/0000-0002-5120-3380)
- Luca Carletti (ORCID: https://orcid.org/0000-0001-6268-9817)
- Domenico de Ceglia (ORCID: https://orcid.org/0000-0001-5736-6298)
- Paolo Franceschini (ORCID: https://orcid.org/0000-0001-5405-7668)
- Costantino De Angelis (ORCID: https://orcid.org/0000-0001-8029-179X)
- Olga Sergaeva (ORCID: https://orcid.org/0000-0003-0922-8768)
- Giuseppe Della Valle (ORCID: https://orcid.org/0000-0003-0117-2683)
- Andrea Tognazzi (ORCID: https://orcid.org/0000-0002-5711-3917)
- Davide Rocco (ORCID: https://orcid.org/0000-0002-5678-0531)
Institutions
- Brescia University (US)
- Instituto de Óptica "Daza de Valdés" (ES)
- University of Brescia (IT)
Publication Details
- Journal
- Optical Materials Express
- Published
- 2024-12-12
- DOI
- https://doi.org/10.1364/ome.543944
- Citations
- 3
- Primary Topic
- Terahertz technology and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.63