Advances in fundamentals and application of plasmon-assisted CO_2 photoreduction
Artificial photosynthesis of hydrocarbons from carbon dioxide (CO_2) has the potential to provide renewable fuels at the scale needed to meet global decarbonization targets. However, CO_2 is a notoriously inert molecule and converting it to energy dense …
Optical computing metasurfaces: applications and advances
Integrated photonic devices and artificial intelligence have presented a significant opportunity for the advancement of optical computing in practical applications. Optical computing technology is a unique computing system based on optical devices and …
Highly efficient upconversion photodynamic performance of rare-earth-coupled dual-photosensitizers: ultrafast experiments and excited-state calculations
Upconversion photodynamic therapy (UC-PDT), which integrates upconversion nanoparticles (UCNPs) with photosensitizers (PSs), presents a promising advancement in the field of phototherapy. However, despite the extensive studies focused on the design and …
Imaging the scattered light of a nanoparticle through a cylindrical capillary
In many experiments, nanoparticles are located inside a microfluidic channel, and the light scattered by the particles becomes diffracted through the walls of the capillary. We here derive a simple but accurate approach for simulating the imaging of light …
Dual high-Q Fano resonances metasurfaces excited by asymmetric dielectric rods for refractive index sensing
The metasurface refractive index sensor has a high degree of tunability and flexibility, providing excellent performance for high precision refractive index sensing applications. The metasurface absorber with metallic structure has been hindered in further …
Multi-wavelength structured light based on metasurfaces for 3D imaging
Structured light projection provides a promising approach to achieving fast and non-contact three-dimensional (3D) imaging. The resolution is a crucial index that represents security and accuracy in applications such as face recognition and robot vision. It …
Interactions and ultrafast dynamics of exciton complexes in a monolayer semiconductor with electron gas
We present femtosecond pump-probe measurements of neutral and charged exciton optical response in monolayer MoSe_2 to resonant photoexcitation of a given exciton state in the presence of 2D electron gas. We show that creation of charged exciton (X^-) …
Full-polarization-locked vortex beam generator with time-varying characteristics
Vortex beams carrying orbital angular momentum (OAM) are considered to hold significant prospects in fields such as super-resolution imaging, high-capacity communications, and quantum optics. Therefore, the techniques of vortex beam generation have attracted …
Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates
Topological states have been widely investigated in different types of systems and lattices. In the present work, we report on topological edge states in double-wave (DW) chains, which can be described by a generalized Aubry-André-Harper (AAH) model. For the …
Spatial signature of the photoelastic effect in the acoustic–plasmonic coupling revealed by space responsivity induced by polarized optical excitation
Acoustic–plasmonic coupling in metallic nanoparticles can significantly alter their optical absorption and scattering characteristics. However, almost all previous investigations on acoustic–plasmonic coupling so far have been focused on the spectral …
Cylindrical vector beam multiplexing holography employing spin-decoupled phase modulation metasurface
Cylindrical vector beams (CVBs) hold considerable promise as high-capacity information carriers for multiplexing holography due to their mode orthogonality. In CVB holography, phase holograms are encoded onto the wave-front of CVBs with different mode orders …