Statut | Confirmé |
Série | LPENS-MDQ |
Domaines | cond-mat |
Date | Mardi 20 Septembre 2022 |
Heure | 13:30 |
Institut | LPENS |
Salle | L357 |
Nom de l'orateur | Kumada |
Prenom de l'orateur | Norio |
Addresse email de l'orateur | |
Institution de l'orateur | NTT Basic Research Laboratory |
Titre | Ultrafast optical-to-electrical conversion in graphene investigated by on-chip THz spectroscopy |
Résumé | Main subject I will talk is ultrafast photocurrent generation and transport in high-quality graphene photodetector. The current generated by femtosecond laser pulse through photo-thermoelectric effect was detected in time domain with the resolution of faster than 1 picosecond by on-chip THz spectroscopy. We could comprehensively understand how incident light is converted to electrical current in graphene, which is crucial information for developing ultrafast graphene optoelectronics. I will also briefly talk about two other subjects in our group: Growth and transport in InAs/InGaSb two-dimensional topological insulator, and Coherent transport of fractional quasiparticle at fractional-integer quantum Hall junction. Reference: Yoshioka, NK et al., Nature Photonics (accepted), arXiv:2203.05752 |
Numéro de preprint arXiv | |
Commentaires | |
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