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View article: Ultracompact high-Q whispering gallery mode microresonator in a non-closed waveguide path
Ultracompact high-Q whispering gallery mode microresonator in a non-closed waveguide path Open
Integrated photonic circuits are foundational for versatile applications, where high-performance traveling-wave optical resonators are critical. Conventional whispering-gallery mode microresonators (WGMRs) confine light in closed-loop wave…
View article: Ultracompact high-Q whispering gallery mode microresonator in a non-closed waveguide path
Ultracompact high-Q whispering gallery mode microresonator in a non-closed waveguide path Open
Integrated photonic circuits are foundational for versatile applications, where high-performance traveling-wave optical resonators are critical. Conventional whispering-gallery mode microresonators (WGMRs) confine light in closed-loop wave…
View article: Miniaturized Computational Dispersion-Engineered Silicon Photonic Vernier Caliper Spectrometer
Miniaturized Computational Dispersion-Engineered Silicon Photonic Vernier Caliper Spectrometer Open
The development of miniaturized spectrometers for cost-effective mobile applications remains challenging, as small footprints fundamentally degrade bandwidth and resolution. Typically, achieving high resolution necessitates extended and so…
View article: Versatile and reconfigurable integrated silicon nitride photonic microresonator
Versatile and reconfigurable integrated silicon nitride photonic microresonator Open
Unlocking the full potential of integrated photonics requires versatile, multi-functional devices that can adapt to diverse application demands. However, confronting this challenge with conventional single-function resonators often results…
View article: Optimal Anchor Deployment and Topology Design for Large-Scale AUV Navigation
Optimal Anchor Deployment and Topology Design for Large-Scale AUV Navigation Open
Seafloor acoustic anchors are an important component of AUV navigation, providing absolute updates that correct inertial dead-reckoning. Unlike terrestrial positioning systems, the deployment of underwater anchor nodes is usually sparse du…
View article: Million-Q dual-polarization micro-Fabry–Pérot resonators in silicon nitride photonic integrated circuits
Million-Q dual-polarization micro-Fabry–Pérot resonators in silicon nitride photonic integrated circuits Open
View article: Van der Waals/MCT Heterostructure Enabled High-Performance Uncooled Mid-Infrared Photodetectors via Synergistic Suppression of Dark Current and Interfacial Recombination
Van der Waals/MCT Heterostructure Enabled High-Performance Uncooled Mid-Infrared Photodetectors via Synergistic Suppression of Dark Current and Interfacial Recombination Open
Mid-wavelength infrared (MWIR) photodetection is crucial for applications such as night vision, remote sensing, spectral imaging and optical communication, yet its room-temperature operation faces a fundamental challenge of excessive dark …
View article: STNet: Prediction of Underwater Sound Speed Profiles with an Advanced Semi-Transformer Neural Network
STNet: Prediction of Underwater Sound Speed Profiles with an Advanced Semi-Transformer Neural Network Open
The real-time acquisition of an accurate underwater sound velocity profile (SSP) is crucial for tracking the propagation trajectory of underwater acoustic signals, making it play a key role in ocean communication positioning. SSPs can be d…
View article: Tunnel Oxide Passivated Contact and Passivated Emitter Rear Cell Solar Module Testing
Tunnel Oxide Passivated Contact and Passivated Emitter Rear Cell Solar Module Testing Open
The tunnel oxide passivated contact (TOPCon) solar cell utilizes an ultra-thin tunnel oxide layer in its passivation layer structure. The performance difference between TOPCon and passivated emitter and rear cell (PERC) solar cells is obvi…
View article: A Multi-task Learning Balanced Attention Convolutional Neural Network Model for Few-shot Underwater Acoustic Target Recognition
A Multi-task Learning Balanced Attention Convolutional Neural Network Model for Few-shot Underwater Acoustic Target Recognition Open
Underwater acoustic target recognition (UATR) is of great significance for the protection of marine diversity and national defense security. The development of deep learning provides new opportunities for UATR, but faces challenges brought…
View article: Bi<sub>2</sub>O<sub>2</sub>Se/Ta<sub>2</sub>NiSe<sub>5</sub> Tunneling Heterojunction for High‐Performance, Polarization‐Sensitive, and Broadband Infrared Photodetector
Bi<sub>2</sub>O<sub>2</sub>Se/Ta<sub>2</sub>NiSe<sub>5</sub> Tunneling Heterojunction for High‐Performance, Polarization‐Sensitive, and Broadband Infrared Photodetector Open
New technologies such as autonomous driving, and machine vision keep pushing the photodetectors to acquire a comprehensive high performance including high responsivity, fast response, low detection limit, polarization sensitivity, and broa…
View article: Photocarrier dynamics at the interface between WS<sub>2</sub> and ozone-irradiated graphene
Photocarrier dynamics at the interface between WS<sub>2</sub> and ozone-irradiated graphene Open
We investigate the photocarrier properties of heterostructures (HSs) formed by WS 2 and ozone-irradiated graphene (OI-graphene), with a focus on the impact of ozone irradiation. Photoluminescence and Raman spectroscopy reveal a pronounced …
View article: On‐Chip Metasurface‐Mediated MoTe<sub>2</sub> Photodetector with Electrically Tunable Polarization‐Sensitivity
On‐Chip Metasurface‐Mediated MoTe<sub>2</sub> Photodetector with Electrically Tunable Polarization‐Sensitivity Open
Photodetectors with tunable polarization sensitivity play a significant role in decoding signals in optical communications, extracting polarization‐encrypted information, and the environmental monitoring of polarization variations. Metasur…
View article: High-sensitivity, high-speed, broadband mid-infrared photodetector enabled by a van der Waals heterostructure with a vertical transport channel
High-sensitivity, high-speed, broadband mid-infrared photodetector enabled by a van der Waals heterostructure with a vertical transport channel Open
The realization of room-temperature-operated, high-performance, miniaturized, low-power-consumption and Complementary Metal-Oxide-Semiconductor (CMOS)-compatible mid-infrared photodetectors is highly desirable for next-generation optoelect…
View article: Underwater SSP Measurement and Estimation: A Survey
Underwater SSP Measurement and Estimation: A Survey Open
Real-time and accurate construction of regional sound speed profiles (SSPs) is important for building underwater positioning, navigation, and timing (PNT) systems as it greatly affects signal propagation modes. In this paper, we summarize …
View article: Ultracompact and broadband Si<sub>3</sub>N<sub>4</sub> Y-branch splitter using an inverse design method
Ultracompact and broadband Si<sub>3</sub>N<sub>4</sub> Y-branch splitter using an inverse design method Open
An effective inverse design method is used to demonstrate an ultracompact and broadband silicon nitride Y-branch 3-dB power splitter. Its topology is determined by a continuously varying function inspired by the universal approximation the…
View article: Direct Linearly Polarized Emission in van der Waals LEDs via Flexoelectric Effect
Direct Linearly Polarized Emission in van der Waals LEDs via Flexoelectric Effect Open
Following the rapid development of information technology, modern polarized light, which is a critical component for display and data transmission, has been in demand for miniaturization and high efficiency, rendering two‐dimensional (2D) …
View article: Van der Waals integrated single-junction light-emitting diodes exceeding 10% quantum efficiency at room temperature
Van der Waals integrated single-junction light-emitting diodes exceeding 10% quantum efficiency at room temperature Open
The construction of miniaturized light-emitting diodes (LEDs) with high external quantum efficiency (EQE) at room temperature remains a challenge for on-chip optoelectronics. Here, we demonstrate microsized LEDs fabricated by a dry-transfe…
View article: Metasurface-enabled broadband multidimensional photodetectors
Metasurface-enabled broadband multidimensional photodetectors Open
View article: Enhanced Electroluminescence Quantum Efficiency via Tunable 2D Built‐In Electric Fields
Enhanced Electroluminescence Quantum Efficiency via Tunable 2D Built‐In Electric Fields Open
The built‐in electric field (BIEF) is of utmost importance for 2D optoelectronic devices, which are typically realized in heterostructures created through interfacial engineering. However, the limitations of the sharp field distribution, i…
View article: Tailoring Polaron Dimensions in Lead‐Tin Hybrid Perovskites
Tailoring Polaron Dimensions in Lead‐Tin Hybrid Perovskites Open
Charge carriers in the soft and polar perovskite lattice form so‐called polaron quasiparticles, charge carriers dressed with a lattice deformation. The spatial extent of a polaron is governed by the material's electron‐phonon interaction s…
View article: A Photoconductor‐Type Position Recognition Mechanism with the Intrinsic High Gain for the Development of Ultra‐Sensitive Light Position Detection
A Photoconductor‐Type Position Recognition Mechanism with the Intrinsic High Gain for the Development of Ultra‐Sensitive Light Position Detection Open
Position‐sensitive detectors (PSDs) are widely used in optical inspection applications, such as precise measurement of distance and angle, surface profiling, and motion tracking, etc. The lateral photovoltaic effect is the mechanism employ…
View article: High-output <b>∼</b>3 <b> <i>μ</i> </b>m MIR pulsed laser enabled by surface state regulation in PtTe2 optical switch
High-output <b>∼</b>3 <b> <i>μ</i> </b>m MIR pulsed laser enabled by surface state regulation in PtTe2 optical switch Open
Mid-infrared (MIR) pulsed lasers operating in the ∼3 μm region play a crucial role in various applications, including molecular spectroscopy, ultrafast molecular imaging, and laser-assisted surgery. Despite recent advancements in MIR gain …
View article: Hot‐carrier engineering for two‐dimensional integrated infrared optoelectronics
Hot‐carrier engineering for two‐dimensional integrated infrared optoelectronics Open
Plasmonic hot carrier engineering holds great promise for advanced infrared optoelectronic devices. The process of hot carrier transfer has the potential to surpass the spectral limitations of semiconductors, enabling detection of sub‐band…
View article: Multidimensional photodetection of light fields based on metasurfaces or two-dimensional materials
Multidimensional photodetection of light fields based on metasurfaces or two-dimensional materials Open
To completely record a light field, photodetectors should be able to obtain corresponding parameters, including the intensity, position, propagation direction, polarization, wavelength, and time. Recently, metasurface-mediated two-dimensio…
View article: Phase-engineered synthesis of atomically thin te single crystals with high on-state currents
Phase-engineered synthesis of atomically thin te single crystals with high on-state currents Open
View article: Volume‐Confined Fabrication of Large‐Scale Single‐Crystalline Molecular Ferroelectric Thin Films and Their Applications in 2D Materials
Volume‐Confined Fabrication of Large‐Scale Single‐Crystalline Molecular Ferroelectric Thin Films and Their Applications in 2D Materials Open
With outstanding advantages of chemical synthesis, structural diversity, and mechanical flexibility, molecular ferroelectrics have attracted increasing attention, demonstrating themselves as promising candidates for next‐generation wearabl…
View article: Silver nanoparticle-induced enhancement of light extraction in two-dimensional light-emitting diodes
Silver nanoparticle-induced enhancement of light extraction in two-dimensional light-emitting diodes Open
Monolayer transition metal dichalcogenides (TMDCs) with direct bandgaps are considered promising candidates for building light-emitting diodes (LEDs). One crucial indicator of their performance is the brightness of electroluminescence (EL)…
View article: GaAs quantum dots under quasiuniaxial stress: Experiment and theory
GaAs quantum dots under quasiuniaxial stress: Experiment and theory Open
The optical properties of excitons confined in initially unstrained GaAs/AlGaAs quantum dots are studied as a function of a variable quasiuniaxial stress. To allow the validation of state-of-the-art computational tools for describing the o…
View article: Polarization-sensitive narrowband infrared photodetection triggered by optical Tamm state engineering
Polarization-sensitive narrowband infrared photodetection triggered by optical Tamm state engineering Open
Polarization-sensitive narrowband photodetection at near-infrared (NIR) has attracted significant interest in optical communication, environmental monitoring, and intelligent recognition system. However, the current narrowband spectroscopy…