A newcomer’s guide to deep learning for inverse design in nano-photonics
Nanophotonic devices manipulate light at sub-wavelength scales, enabling tasks such as light concentration, routing, and filtering. Designing these devices to achieve precise light–matter interactions using structural parameters and materials is a …
Information multiplexing from optical holography to multi-channel metaholography
Holography offers a vital platform for optical information storage and processing, which has a profound impact on many photonic applications, including 3D displays, LiDAR, optical encryption, and artificial intelligence. In this review, we provide a …
Optical tuning of the terahertz response of black phosphorus quantum dots: effects of weak carrier confinement
In contrast to few-layer black phosphorus (BP) with a relatively larger area, BP quantum dots (BP-QDs) are expected to have distinctive electromagnetic response and carrier behaviors, especially in low-frequency range such as in the THz regime. Herein, we …
Tunable bound states in the continuum in active metasurfaces of graphene disk dimers
Bound states in the continuum (BICs) in metasurfaces have lately attracted a great deal of attention stemming from their inherent (formally) divergent Q factors, which lead to an enhancement of light–matter interaction in two-dimensional geometries. …
Ultrafast dynamics and ablation mechanism in femtosecond laser irradiated Au/Ti bilayer systems
The significance of ultrafast laser-induced energy and mass transfer at interfaces has been growing in the field of nanoscience and technology. Nevertheless, the complexity arising from non-linear and non-equilibrium optical-thermal-mechanical interactions …
Large-scale synthesis and exciton dynamics of monolayer MoS_2 on differently doped GaN substrates
Mixed dimensional van der Waals heterostructure based on layered two-dimensional molybdenum disulfide (MoS_2) interfaced to gallium nitride (GaN) has attracted tremendous attention due to its unique properties and application in novel electronic, …
Revealing defect-bound excitons in WS_2 monolayer at room temperature by exploiting the transverse electric polarized wave supported by a Si_3N_4/Ag heterostructure
Two-dimensional (2D) transition metal dichalcogenide (TMDC) monolayers are promising materials for light-emitting devices due to their excellent electric and optical properties. However, defects are inevitably introduced in the fabrication of TMDC monolayers, …
Carrier transfer in quasi-2D perovskite/MoS_2 monolayer heterostructure
Two-dimensional layered semiconductors have attracted intense interest in recent years. The van der Waals coupling between the layers tolerates stacking various materials and establishing heterostructures with new characteristics for a wide range of …
Concentric ring optical traps for orbital rotation of particles
Optical vortices (OVs), as eigenmodes of optical orbital angular momentum, have been widely used in particle micro-manipulation. Recently, perfect optical vortices (POVs), a subclass of OVs, are gaining increasing interest and becoming an indispensable tool …
A compact weak measurement to observe the spin Hall effect of light
The spin Hall effect of light (SHEL), a microscopic and transverse splitting of linearly polarized light into circularly polarized components during refraction and reflection, can be measured at subnanometer scales using weak measurements and has emerged as a …