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


Hybrid intelligent strategy driving high-dimensional encrypted orbital angular momentum comb multicasting towards optical data-transmission networks

Researchers developed a hybrid intelligent strategy for high-dimensional OAM-comb multicasting using single-shot phase-only holography. The system expands communication dimensionality through parallel multicasting channels and structured OAM combs, achieving high-capacity transmission with enhanced security.

Fully tunable on-chip meta-generator mapping multidimensional Poincaré spheres

The research team developed a fully tunable on-chip meta-generator, enabling compact control of structured light fields with high mechanical stability and multi-dimensional tunability. The platform achieves breakthroughs in waveguide mode multiplexing and full-surface dynamic remapping across diverse Poincaré spheres.

Ultrafast switching of optical properties in a doped semiconductor by intense femtosecond laser pulses

Researchers investigated ITO's optical response to femtosecond laser pulses, finding large changes in transmission and reflection. The material's useful switching response saturates due to electronic band structure limitations, and a distinct high-intensity regime is observed with possible Auger-type electron-electron interactions.

Single-fiber three-dimensional shape sensing via femtosecond laser inscribed orthogonal eccentric scatterers

Researchers developed a new deformation-sensing mechanism using misplaced orthogonal eccentric scatterers in a standard single-mode fiber. By encoding 3D shape information into the fiber's scattering structure, the system can reconstruct complex three-dimensional geometries while preserving compact size and structural simplicity.

Sliding metasurface for wide-angle beam steering with sharp frequency filtering

A fully passive sliding metasurface unifies sharp frequency filtering and wide-angle beam steering, achieving sharp spectral selectivity and stable beam steering over a wide angular range. This compact platform offers a promising route to coordinated frequency-angle wave control for various electromagnetic systems.

Multi-channel metasurface reshapes thermal camouflage and security encryption

Researchers developed a novel dual-band metasurface that independently manages thermal energy across mid-wave and long-wave infrared channels. The platform enables unprecedented control over thermal signatures, allowing for secure optical data encryption and multi-sensor military stealth.

Geometry–texture dual-driven SLAM enables panoramic 3D photoacoustic vascular mapping

A new method, PAATAM, combines vascular geometry and signal-intensity features to generate robust 3D vascular maps, preserving flow velocity and direction. This enables real-time, freehand, and minimally invasive photoacoustic imaging for surgical guidance, perfusion assessment, and postoperative evaluation.

Programmable rotation of single cells along arbitrary axes via opto-thermo-osmotic torque

Researchers developed a programmable platform capable of rotating single cells along arbitrary axes and switching between distinct rotational modes. The platform uses a plasmonic substrate with localized temperature gradients and depletion forces to confine cells, enabling highly flexible control of forces and torques.

Potassium brings plasmonics closer to its low-loss limit

Researchers demonstrate that potassium can act as an ultralow-loss plasmonic metal, overcoming the conventional loss-confinement tradeoff. The new fabrication method called slipping-assisted oxide-free crystallization enables centimeter-scale potassium films with low optical damping and strong optical confinement.

Breakthrough in optical-fiber-based minimally invasive imaging using optical frequency combs and deep learning

Researchers have developed a new paradigm in computational imaging that achieves video-rate capture of dynamic scenes using a single-core optical fiber and a single-pixel photodetector. The system utilizes highly stabilized dual optical frequency combs and a deep-learning transformer model to reconstruct high-fidelity target images.

Spin-multiplexed point spread function engineering via dielectric metasurface for simultaneous optical differentiation and high-resolution imaging

Researchers develop metasurface optical differentiator that performs spin-multiplexed differentiation and high-resolution imaging simultaneously. The device enables fast, parallel processing of optical information for real-time biological imaging, material inspection, and machine vision applications.

A practical route to low-loss integrated quantum photonic chips

Scientists have developed a self-aligned heterogeneous photonic integration method that combines diamond and titanium dioxide for low-loss architecture, enabling practical quantum networks and computers. The approach demonstrates key device functions on chip, including hybrid optical cavities and spin state control.

Background-free quantitative phase imaging with adaptive-optics surface plasmon resonance holographic microscopy

Researchers propose adaptive optics-based surface plasmon resonance holographic microscopy for background-free quantitative phase imaging. The method eliminates wavefront aberrations and enables high-quality imaging of samples with dense cell layers, promising applications in biomedical and materials science.

Optical singularity protractor for rotating metrology with neuromorphic sensing

A novel optical singularity protractor enables precise rotation sensing with neuromorphic sensing, overcoming limitations of traditional Doppler-based methods. The approach decodes rotational frequency shift by tracking phase singularity trajectories, achieving high-precision and robust performance in complex scenarios.

Seeing activities in 3D neural structures at 100 Hz

A new microscopy technique captures rapid calcium dynamics across extended neuronal structures, revealing sub-threshold and suprathreshold spatiotemporal modes in neurons. The dual-view Bessel two-photon projection microscopy achieves a volumetric imaging rate of 100 Hz, surpassing conventional sequential scanning.

Monolithic QBIC-MQW chip for machine vision

A novel QBIC-MQW chip for machine vision has been developed with a tunable nonlinear photoresponse and a linear photoresponse modulated by incident angle and external bias voltage. The chip enables high-efficiency optoelectronic response and low-energy consumption for real-time object tracking and optically encrypted communication.

Dual-mode switchable and reconfigurable Van der Waals phototransistor for multi-state image encryption

A research team developed a dual-mode phototransistor based on a PtTe₂/WS₂ van der Waals heterostructure, achieving high sensitivity and low dark current. The device enables multi-state information processing and quaternary image encryption with a high adjacent-pixel correlation coefficient reduction.

High-performance weak polarization electric field III-nitride LEDs on polar plane

Researchers have developed high-efficiency weak-PEF III-nitride blue LEDs on the polar c-plane, demonstrating high peak external quantum efficiency and wavelength stability. The devices also exhibit strong lateral carrier confinement, reducing efficiency degradation from sidewall effects in small-size micro-LEDs.

Heterogeneous metalens array unlocks immersive XR displays

A team of scientists has developed a heterogeneous metalens array that overcomes the FOV limitation of conventional microlens arrays, achieving a 50° FOV 3D display and expanding the field of view by about fourfold. The architecture is highly scalable and demonstrates physically accurate focus and defocus behaviors.

Precise machining of refractory high entropy alloy by water-jet guided laser

Researchers have successfully precise machined refractory high entropy alloy using water-jet guided laser technology, achieving a clean processing interface and ultra-thin heat-affected zone. The technology also shows high quality characteristics in micro-drilling with low roughness and high consistency.

Two-inch wafer-scale Micro-QLED fabrication technology

Researchers developed a feasible fabrication strategy for 2-inch Micro-QLED wafers using solvent engineering and photolithography-template assisted processing. The technology enables large-area uniform quantum-dot films and resolves high-resolution and high-brightness limitations of existing microdisplay technologies.

Two-terminal β-Ga2O3 photo-synapse for diversified in-sensor computing via self-trapped holes engineering

Researchers developed a novel β-Ga2O3 photo-synapse that uses self-trapped holes to achieve improved stability and performance. The device exhibited excellent short-term and long-term plasticity, outperforming previous devices, and was integrated into neuromorphic machine vision systems for diversified in-sensor computing tasks.

Femtosecond laser fabrication of ultrafine quantum-dot pixels for micro-LEDs

A new method using femtosecond lasers enables the fabrication of ultrafine quantum-dot pixels with high precision and color purity for micro-LEDs. The method produces well-defined monochromatic red and green arrays with clear boundaries, achieving luminous uniformities of 90% and 97%.

Polarization metrology for linear birefringence

Researchers summarize a systematic overview of polarization optical metrology for linear birefringence in transparent anisotropic media. The review discusses physical origins, measurement methods, and applications, including residual stress analysis, advanced material characterization, and biomedical imaging.

Illumination and microscopy combined in a single fiber bundle by 3D-printed micro-optics

A team of researchers created a micro-3D-printed, monolithic optical system that co-integrates micro-scale imaging and ring-illumination in a single fiber bundle endoscope. The compact system achieves a resolution of micro-scale imaging in air and biomedical liquids, enabling future endoscopes for less invasive imaging procedures.

Light-driven molecular reorientation for large-scale photonic in-memory computing

A new platform using liquid-crystal Poincaré-sphere-connected diffractive neural networks enables large-scale photonic in-memory computing with minimal data-movement overheads and ultralow static power. It achieves a 100,000-fold improvement in memory capacity over state-of-the-art platforms.

Multifunctional frequency modulated continuous wave LiDAR for simultaneous 3D imaging and multi-parameter sensing

A new LiDAR system enables simultaneous 3D imaging and multi-parameter sensing for electric vehicle safety. The system accurately measures temperature, gas concentrations, and liquid density, and has potential applications in new energy vehicles and spacecraft.

Dual-functional metasurfaces enabling high-efficiency holography and triple-color printing

Researchers develop a dual-functional metasurface that achieves high holographic efficiency while enabling structural color printing. The metasurface displays vivid structural colors and reconstructs holographic images with high efficiency across a broad range of visible wavelengths.

Flexible and robust Te/PET films for ultrafast all-optical terahertz modulators

Researchers developed flexible Te/PET films for ultrafast all-optical terahertz modulators, achieving high modulation depth and ultrasensitive response. The device maintained stable performance under bending deformation, enabling reliable information processing for intelligent sensing and neuromorphic optoelectronic systems.

Host-engineered carbon dot luminescence: Integration with nanowires for photonics

The integration of carbon dots with nanowires overcomes aggregation issues, enabling precise spectral filtering and optical confinement for enhanced photoluminescence. This scalable host-guest architecture offers a powerful platform for nanophotonic light sources in sensing, communication, and quantum technologies.

High-speed and high-sensitivity multi-gas detection based on parallel heterodyne LITES sensor

The PH-LITES sensor uses parallel heterodyne LITES to detect multiple gases simultaneously, achieving record-high OPL/V and significantly enhancing gas absorption signals. It enables high-speed detection capability through parallel heterodyne modulation and accurate mapping of gas concentrations from a single QTF output.

Machine learning-assisted thermochromic smart windows for thermal management

Researchers developed an AI-driven framework for designing thermochromic smart windows with enhanced directional privacy protection and efficient thermal management. The smart windows can adapt to various climates and reduce energy losses in buildings, offering significant energy savings.

Reconfigurable ferroelectric nanostructures enable fast-switchable optical differentiation

Researchers propose a reconfigurable ferroelectric chiral nanostructure for fast-switchable optical differentiation, achieving remarkable performances in edge detection. The device can switch between optical differentiation and bright-field imaging, with a switching time of 62 microseconds.

Bringing optical fibre material to photonic chips

The team demonstrated ultrahigh Q integrated germano-silicate microresonators on silicon using flame hydrolysis deposition, achieving a propagation loss as low as 0.07 dB per metre. This work brings fibre-level low loss to photonic chips, enabling scalable and deployable chip systems for next-generation applications.

Machine learning-assisted thermochromic smart windows for thermal management

Researchers developed an AI-driven framework for thermochromic smart windows, achieving ultrahigh simultaneous modulation of near-infrared and longwave infrared emissions. The smart window enables climate-adaptive thermal management without compromising commercial privacy protection.

High-efficiency and stable deep-blue iridium phosphorescent OLEDs with enhanced charge transfer dynamics

Researchers developed high-efficiency and stable deep-blue OLEDs using iridium phosphorescent complexes with enhanced charge transfer dynamics. The devices achieved maximum external quantum efficiencies of up to 29.0% and demonstrated operational stability, paving the way for next-generation microdisplay and display technologies.

Achieving sub-ambient radiative cooling under haze-polluted atmosphere

A new framework models and optimizes radiative cooling under haze conditions, finding haze selectively scatters sunlight more strongly than it degrades infrared thermal radiation. This asymmetry shifts design priority, recommending coolers maximize infrared emission under haze-polluted skies.

Towards a physics-informed network paradigm with data generation and background noise removal for different distributed acoustic sensing applications

A new paradigm addresses challenges in distributed acoustic sensing by combining physical models with AI-driven generative modeling and denoising. The framework achieves high accuracy in fault diagnosis and event recognition, opening up scalable and precise acoustic monitoring for industrial safety and infrastructure applications.

A breakthrough in operando quantification of state-of-charge in sodium-ion batteries using optical fiber sensors

A team of scientists has developed an implantable optical fiber electrochemical sensor to monitor state-of-charge in sodium-ion batteries. The sensor achieves sub-micron spatial resolution and refractive index resolution of 10^-6 RIU, allowing for precise tracking of ion kinetics.

High-purity linearly polarized emission from a compact BIC laser

A team of scientists proposes a dispersion-assisted polarization engineering strategy to achieve high-purity linearly polarized emission from compact BIC lasers. The approach relies on far-field beam-polarization matching, resulting in consistent linear polarization across the entire beam cross-section. Experimental validation demonstr...

Fully in-house pipeline for X-ray nanofocusing mirrors at NSLS-II

A US team has created an integrated manufacturing framework to produce atomic-scale optics for next-generation light sources. The pipeline links atomic-scale fabrication and precision metrology to in-situ X-ray beam validation, achieving deterministic delivery of nanofocusing mirrors.

Generating vectorial optical fields via surface-wave-excited complex-amplitude metasurfaces

Researchers develop platform generating complex VOFs with spatially tailored wavefront profiles and polarization distributions, showcasing exceptional capabilities in multifunctional beam shaping and complex wavefront engineering. The platform enables independent control over amplitude, phase, and polarization of radiation fields.