3 papers
physics.optics2024
Enhanced second harmonic generation in high- all-dielectric metasurfaces with backward frequency conversion
Xu Tu, Siqi Feng, Jiajun Li +4
Here we employ the quasi-bound state in the continuum (quasi-BIC) resonance in all-dielectric metasurfaces for efficient nonlinear processes in consideration of the backward freque…
physics.optics2024
Single-sized phase-change metasurfaces for dynamic information multiplexing and encryption
Tingting Liu, Jie Li, Shuyuan Xiao
Optical metasurfaces empower us to manipulate the electromagnetic space and control light propagation at the nanoscale, offering a powerful tool to achieve modulation of light for…
physics.optics2024
Efficient photon-pair generation empowered by dual quasi-bound states in the continuum
Tingting Liu, Meibao Qin, Siqi Feng +4
Here we demonstrate the efficient photon-pair generation via spontaneous parametric down conversion from a semiconductor metasurface supporting dual quasi-bound states in the conti…