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Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS


Recover chaos for secure communications

A recent study overcomes challenges of turbulence in free-space optical links by using a multi-aperture system combined with a photonic chip. This allows for the recovery of chaotic signals even under harsh turbulence conditions. The technology mimics a smart eye to capture light from several angles and reconfigure it into a clear signal.

Multiple defects renovation and phase reconstruction of reduced-dimensional perovskites via in situ chlorination for efficient deep-blue (454 nm) light-emitting diodes

A new method using in situ chlorination post-treatment has been proposed to renovate both deep-state and shallow-state defects in quasi-2D perovskites, significantly enhancing their optoelectronic performance. The resulting deep-blue light-emitting diodes achieved an external quantum efficiency of 6.17%.

Early detection of lithium battery leakage using a highly sensitive in situ ZIF-8 membrane-coated micro-nano optical fiber

Researchers propose a new sensor that can detect lithium battery leakage with high sensitivity, enabling early warning and protection for safety. The sensor uses a ZIF-8 membrane-coated micro-nano optical fiber to detect trace amounts of electrolyte vapor leakage.

Progress on intelligent metasurfaces for signal relay, transmitter, and processor

Researchers have made significant progress in developing intelligent metasurfaces to reshape the wireless communication environment, enabling efficient signal relay and processing. The technology has the potential to improve network performance with limited spectral resources.

Engraving light nonlinearly: A breakthrough in optical storage promises a faster, greener future

Researchers have introduced a game-changing technique called Up-Conversion Charging (UCC) that slashes writing times for single data to just 0.01 seconds, paving the way for high-density storage. UCC uses nonlinear excitation with visible light to guide electrons up an energy ladder, sharpening precision and refining patterns.

Frontier molecular orbital weighted model based networks for revealing organic delayed fluorescence efficiency

A novel deep learning model, ESIN, integrates molecular geometry and electronic structure data to predict the photoluminescence quantum yield of organic thermally activated delayed fluorescence (TADF) materials. The model leverages principles of frontier molecular orbitals to enhance predictive accuracy and interpretability.

Single-shot super-resolved fringe projection profilometry (SSSR-FPP): 100,000 frames-per-second 3D imaging with deep learning

Researchers developed single-shot super-resolved fringe projection profilometry (SSSR-FPP) using deep learning to achieve 100,000 frames-per-second 3D imaging. This breakthrough offers new insights into ultra-fast dynamic processes and could revolutionize fields like mechanics and biology.

Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis

A novel optical semantic communication system using multimode fiber was developed to enhance data transmission capacity and robustness. The system demonstrated a seven-fold increase in transmission capacity compared to conventional methods, and improved noise tolerance for sentiment analysis applications.

A new family member of toroidal electromagnetic excitations

Scientists have proposed and successfully generated hybrid electromagnetic toroidal vortices, combining vectorial and scalar electromagnetic toroidal vortices. These structures integrate key features such as topological skyrmions, transverse orbital angular momentum, spatiotemporal fields, and electromagnetic vortex streets.

High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters

Researchers developed high-efficiency white OLEDs using robust blue MR-TADF emitters, achieving a maximum external quantum efficiency of 34.4% and a power efficiency of 101.8 lm/W. The devices demonstrated stable white light emission and long-lasting applications with a luminance lifetime of 761 hours.

Universal conservation laws of the wave–particle–entanglement triad

Researchers develop a theoretical framework that reveals a conservation relationship among wave behaviour, particle behaviour, and entanglement. The team finds that the sum of these three elements remains constant, regardless of the choice of bipartite pure state, with experimental validation for various dimensions

Dynamic volumetric displays enabled by tunable upconversion in rare-Earth-doped glasses

Researchers developed innovative RE³⁺-doped monolithic glasses capable of tunable full-color emission under NIR laser excitation. These glasses overcome key obstacles faced by existing technologies and demonstrate the potential as materials for dynamic, full-color laser-based volumetric displays.

Membrane-targeted push-pull azobenzenes for the optical modulation of membrane potential

Researchers developed push-pull azobenzenes that interact with the lipid bilayer and induce light-dependent membrane potential changes. The molecules' ability to partition into membranes and undergo isomerization allows for precise modulation of surface charge, enabling non-invasive cell stimulation.

Harnessing device architecture for enhanced terahertz harmonic generation

Researchers have developed novel strategies to enhance THz nonlinearities in graphene-based structures, increasing third harmonic generation up to 30 times. A multilayered design and metasurface substrates were used to amplify the THz field, leading to a two-order magnitude increase in efficiency.

Chiral Exceptional point enhanced tuning and non-reciprocity in silicon microring

Researchers explore the contribution of exceptional points to electro-optic tunability, modulation, and nonreciprocal responses in silicon microring. A novel EP system enables precise phase-sensitive control of coupling between clockwise and counterclockwise modes, leading to enhanced amplitude modulation.

Portable astronomical observation system based on large-aperture concentric-ring metalens

Researchers developed a portable telescopic system with a 5cm diameter concentric-ring metalens, achieving high-resolution detection within a 20° field of view. The design features an image-side telecentric optical system and a front aperture stop to reduce edge ray aberration, resulting in a PSF with MTF > 0.4 @ 46lp/mrad.

Quantum imaging breakthrough achieved with ultra-thin nonlinear metasurfaces

Scientists achieved a quantum imaging breakthrough with an ultra-thin nonlinear metasurface, combining ghost imaging and all-optical scanning methods to reconstruct images with exceptional resolution. This approach eliminates the need for bulky nonlinear crystals and enables compact, highly tunable platforms for quantum imaging.

A multiband NIR upconversion core-shell design for enhanced light harvesting of silicon solar cells

Yb³⁺ doping enables efficient NIR upconversion by suppressing multiphoton emissions and directing photons into the optimal response band of silicon solar cells. A core-shell structure design integrates multiple fluorescence conversion layers, expanding the SSC response range and enhancing photovoltaic efficiency.

Effect of gamma-rays on recombination dynamics and defect concentration in a wide bandgap perovskite

A new study reveals that gamma-ray exposure can passivate some defects while activating others, leading to improved recombination dynamics. The concentration of dominant 0.5 eV defects decreases with increasing dose, while the diffusion coefficient increases by orders of magnitude.

High-performance colloidal quantum-dot surface-emitting laser array

Researchers have developed a CQD-based SEL array with low lasing threshold, high stability and high integration density of up to 2100 PPI. The new design features a graded alloyed core-shell structure and circular Bragg resonator, resulting in enhanced optical field confinement and Purcell effect.

Chiral Exceptional point enhanced tuning and non-reciprocity in silicon microring

Researchers develop a nano-heater aligned to one arm of the micro-resonator for deterministic, dynamic tuning of chirality and precise phase-only control. This leads to enhanced electro-optic amplitude modulation in photonic integrated circuits, reducing energy consumption and simplifying circuit design.

Applications of ultrafast nano-spectroscopy and nano-imaging

Ultrafast nano-spectroscopy and nano-imaging enable atomic-scale spatial and femtosecond-level temporal resolutions, allowing for the direct observation of fleeting quantum states and complex phenomena. This breakthrough permits real-time exploration of ultrafast interaction processes with unprecedented insights into material properties.

From light sensing to adaptive learning: Reconfigurable memcapacitive devices in neuromorphic computing

A new MOSCap device using Hafnium diselenide replicates neuron-like adaptive behavior and memory retention, enabling faster data processing and adaptive capabilities. The device maintains its data stability under stressing conditions and preserves data after removal of light stimuli.

Polaron-assisted organic integer charge transfer hybrids for near-infrared photodetection

Researchers have proposed a novel strategy utilizing ICT between D-A molecules to enhance IR photodetection. The approach leads to elevated EQE in the polaron absorption region and strong low-energy subgap absorptions, offering a pathway to high-performance next-generation IR photodetectors.

Innovative vortex beam technology unleashes ultra-secure, high-capacity data transmission

Researchers developed a breakthrough optical technology, SC-PVVBs, that can carry vast amounts of information, making them ideal for dense data communication systems. The technology overcomes conventional optical beam limitations by locally patching spatial frequency to create multiple data channels.

Fast super-resolved microscopy with a structured illumination and extended depth detection

Extended Depth-of-Field Random Illumination Microscopy (EDF-RIM) offers a breakthrough in fluorescence microscopy, combining super-resolution with extended depth-of-field detection. This innovation allows for efficient imaging of large and complex 3D structures, minimizing light exposure and acquisition time.