4 papers
Beam shaping by nonlinear moiré metasurfaces
Lun Qu, Wei Wu, Di Zhang +7
This paper explores the interplay of momentum transfer and nonlinear optical processes through moiré phenomena. Momentum transfer plays a crucial role in the interaction between ph…
Electro-optically Modulated Nonlinear Metasurfaces
Zhengqing He, Lun Qu, Wei Wu +10
Tunable nonlinearity facilitates the creation of reconfigurable nonlinear metasurfaces, enabling innovative applications in signal processing, light switching, and sensing. This pa…
Bright Second Harmonic Emission from Photonic Crystal Vertical Cavity
Lun Qu, Zhidong Gu, Chenyang Li +12
We present a study on photonic vertical cavities consisting of nonlinear materials embedded in photonic crystals (PhCs) for resonantly enhancing second harmonic generation (SHG). P…
Photocurrent imaging of hybrid polaritons in graphene based heterostructures
Weiwei Luo, Jialin Qi, Linglong Zhang +8
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…