181. plasmon enhanced nonlinear optical nano device and materials
Name: Yuan Zeng
Grad Year: 2020
Second order nonlinear optics is a technique which convert two low energy photons to one high energy photon, can be applied to nanolaser, bioimaging, clinical diagnostics, waveguide etc. This nonlinear process includes Second Harmonic Generation (SHG) and Two Photon Photoluminance (TPPL). In SHG project, we used colloidal metasurface for wafer scale fabrication of double resonance structure, which has near-field enhancement at both excitation wavelength and emission wavelength, to achieve high SHG efficiency. In TPPL project, we synthesized copper chalcogenides nanoparticles with bandgap in visible range (around 500 nm) and localized surface plasmon resonance (LSPR) in NIR range. This LSPR induces a strong near-field enhancement which significantly boost the absorption process, and leads to a high TPPL emission efficiency.
Industry Application Area(s)
Electronics/Photonics | Materials | Semiconductor