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arXiv · 2302.09552

Photocurrent imaging of hybrid polaritons in graphene based heterostructures

Weiwei Luo·Jialin Qi·Linglong Zhang·Jiang Fan·Junjie Dingxiao·Ni Zhang·Wei Wu·Mengxin Ren·Xinzheng Zhang·Wei Cai·Jingjun Xu
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Abstract

Photocurrent is arising as a powerful tool for detecting in-plane collective excitations in hybrid polariton systems. In this paper, based on the intrinsic optoelectric response of graphene, photocurrent imaging of in-plane plasmons from each graphene layer is presented in a hybrid graphene-graphene heterostructure. In combination with near-field optical signals which detect plasmons above the sample, three dimensional detection of hybrid plasmons is demonstrated. Especially, only an electronic boundary is necessary for the electrical detection of hybrid plasmons, which acts as both the photocurrent junction and plasmon reflector. Our studies would promote electrical studies of polariton related physical phenomena and pave the way towards all-electrical nano-optical processing.

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Weiwei Luo, Jialin Qi, Linglong Zhang, Jiang Fan, Junjie Dingxiao, Ni Zhang, Wei Wu, Mengxin Ren, Xinzheng Zhang, Wei Cai, Jingjun Xu. 2023-02-19. Photocurrent imaging of hybrid polaritons in graphene based heterostructures. https://arxiv.org/abs/2302.09552

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