Issue 22 (2024)

Highly uniform silicon nanopatterning with deep-ultraviolet femtosecond pulses

Highly uniform silicon nanopatterning with deep-ultraviolet femtosecond pulses

The prospect of employing nanophotonic methods for controlling photon–electron interactions has ignited substantial interest within the particle accelerator community. Silicon-based integrated dielectric laser acceleration (DLA) has emerged as a viable …

Strongly coupled plasmon-exciton polaritons for photobleaching suppression

Strongly coupled plasmon-exciton polaritons for photobleaching suppression

Strong light–matter interactions have received a lot of attention, for example in the pursuit of plasmonic-excitonic structures as coherent light sources with low-power threshold. In this study, we investigate the influence of room temperature strong …

Millimeter-precision positioning for wide-angle indoor area enabled by metalens-integrated camera

Millimeter-precision positioning for wide-angle indoor area enabled by metalens-integrated camera

Due to signal shielding caused by building structures, conventional mature positioning technologies such as the Global Positioning System (GPS) are only suitable for outdoor navigation and detection. However, there are many scenarios that urgently require …

Hybrid plasmonic nanodiamonds for thermometry and local photothermal therapy of melanoma: a comparative study

Hybrid plasmonic nanodiamonds for thermometry and local photothermal therapy of melanoma: a comparative study

Hyperthermia plays a significant role in cancer treatment by inducing cell damage through temperature elevation, often used alongside other treatment modalities. During hyperthermia therapy, temperature control is crucial. Here, we report on a simple …

Inverse-designed taper configuration for the enhancement of integrated 1 × 4 silicon photonic power splitters

Inverse-designed taper configuration for the enhancement of integrated 1 × 4 silicon photonic power splitters

Once light is coupled to a photonic chip, its efficient distribution in terms of power splitting throughout silicon photonic circuits is very crucial. We present two types of 1 x 4 power splitters with different splitting ratios of 1:1:1:1 and 2:1:1:2. …

Low-loss and compact arbitrary-order silicon mode converter based on hybrid shape optimization

Low-loss and compact arbitrary-order silicon mode converter based on hybrid shape optimization

Mode converters (MCs) play an essential role in mode-division multiplexing (MDM) systems. Numerous schemes have been developed on the silicon-on-insulator (SOI) platform, yet most of them focus solely on the conversion of fundamental mode to one or two …

Asymmetric bi-level dual-core mode converter for high-efficiency and polarization-insensitive O-band fiber-chip edge coupling: breaking the critical size limitation

Asymmetric bi-level dual-core mode converter for high-efficiency and polarization-insensitive O-band fiber-chip edge coupling: breaking the critical size limitation

Efficient coupling between optical fibers and on-chip photonic waveguides has long been a crucial issue for photonic chips used in various applications. Edge couplers (ECs) based on an inverse taper have seen widespread utilization due to their intrinsic …

Snapshot computational spectroscopy enabled by deep learning

Snapshot computational spectroscopy enabled by deep learning

Spectroscopy is a technique that analyzes the interaction between matter and light as a function of wavelength. It is the most convenient method for obtaining qualitative and quantitative information about an unknown sample with reasonable accuracy. However, …

Multichannel full-space coding metasurface with linearly-circularly-polarized wavefront manipulation

Multichannel full-space coding metasurface with linearly-circularly-polarized wavefront manipulation

Achieving independent multitasked wavefront control by using an ultrathin plate is a challenge to increase information capacity in integration optics and radar applications. Transmission-reflection-integrated metasurface provides an efficient recipe primarily …

Neural network-assisted meta-router for fiber mode and polarization demultiplexing

Neural network-assisted meta-router for fiber mode and polarization demultiplexing

Advancements in computer science have propelled society into an era of data explosion, marked by a critical need for enhanced data transmission capacity, particularly in the realm of space-division multiplexing and demultiplexing devices for fiber …

Wafer-scale nanofabrication of sub-5nm gaps in plasmonic metasurfaces

Wafer-scale nanofabrication of sub-5nm gaps in plasmonic metasurfaces

In the rapidly evolving field of plasmonic metasurfaces, achieving homogeneous, reliable, and reproducible fabrication of sub-5 nm dielectric nanogaps is a significant challenge. This article presents an advanced fabrication technology that addresses this …

High-efficiency and broadband asymmetric spin–orbit interaction based on high-order composite phase modulation

High-efficiency and broadband asymmetric spin–orbit interaction based on high-order composite phase modulation

Asymmetric spin–orbit interaction (ASOI) breaks the limitations in conjugate symmetry of traditional geometric phase metasurfaces, bringing new opportunities for various applications such as spin-decoupled holography, imaging, and complex light field …

Artificial optoelectronic synapse based on CdSe nanobelt photosensitized MoS_2 transistor with long retention time for neuromorphic application

Artificial optoelectronic synapse based on CdSe nanobelt photosensitized MoS_2 transistor with long retention time for neuromorphic application

Optoelectronic synaptic devices have been regarded as the key component in constructing neuromorphic computing systems. However, the optoelectronic synapses based on conventional 2D transistor are still suffering low photosensitivity and volatile retention …