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


Coupled non-Hermitian skin effect with exceptional points

A team of researchers has revealed the interplay between skin modes and exceptional points in non-Hermitian systems. By coupling two systems, they demonstrated that multiple pairs of exceptional points can emerge, leading to a phase transition in skin modes and suppressing the coupled skin effect.

Scientists made a “knob” to tune topological spin textures in materials

Researchers develop new optical method to engineer and control topological solitons, such as skyrmions and antiskyrmions, within ferroelectric materials. The technique harnesses the Poincaré sphere concept to create and dynamically manipulate these nano-scale topological entities at ultrafast speeds.

Ultrasonic-responsive phosphorescence in aqueous solution by rigid framework engineering

Researchers developed a novel method to regulate phosphorescent carbon dots by modulating the self-assembly of cyclodextrin through ultrasonic means. The resulting materials exhibit long-lived excited states, enhancing signal-to-noise ratio and tissue penetration for non-invasive imaging. Ultrasonic responsiveness is positively correla...

Color-thermal multispectral camouflage with VO2-based dynamic regulator

A team of scientists developed a multispectral dynamic regulator based on vanadium dioxide (VO2) for tunable control in visible and mid-infrared bands. The device achieves dynamic color-thermal camouflage, mitigating interference from additional heat sources and enhancing performance across diverse environments.

Fast-hyperspectral imaging remote sensing: Emission quantification of NO2 and SO2 from marine vessels

A new fast-hyperspectral imaging remote sensing technique enables precise imaging and quantification of nitrogen dioxide (NO₂) and sulfur dioxide (SO₂) emissions from marine vessels. The system achieves accurate plume categorization, outline identification, and detailed observation of trace gas distribution.

Missing harmonic dynamics in Generalized Snell’s Law: revealing full-channel characteristics of gradient metasurfaces

Researchers introduce a new theoretical framework that accounts for higher-order spatial harmonics in gradient metasurfaces, enabling precise control over inter-unit coupling. This allows for unprecedented harmonic-selective control in devices, with applications in ultra-dense beamforming and reconfigurable multichannel sensing.

Enhanced magnetic second-harmonic generation in an ultra-compact plasmonic nanocavity

Researchers create subwavelength dimer-on-film nanocavities to excite magnetic dipole resonance, enabling Lorentz-force-driven second-harmonic generation with high efficiency. The approach breaks conventional design paradigms and offers a new framework for studying magnetic field-related nonlinear optical processes.

Giant two-photon upconversion from 2D exciton in doubly-resonant plasmonic nanocavity

Scientists have developed a new plasmonic nanocavity that enhances two-photon upconversion from 2D excitons by 2440-fold. The nanostructure's resonance wavelength can be adjusted to optimize light collection and emission directionality, leading to improved efficiency in nonlinear photonic devices.

Reconfigurable nonlinear Pancharatnam-Berry optics with patterned ferroelectric nematics

Researchers developed reconfigurable nonlinear Pancharatnam-Berry optics using patterned ferroelectric nematics, enabling dynamic control over nonlinear phase shifts. The approach offers unprecedented flexibility for advanced optical processing, adaptive optics, and quantum information technologies.

Recyclable luminescent solar concentrator from lead-free perovskite derivative

Scientists have developed a recyclable luminescent solar concentrator (LSC) using a lead-free perovskite derivative, which absorbs sunlight and emits fluorescence to generate electricity. The LSC exhibits high power conversion and optical efficiencies, as well as self-healing and reversible transition properties.

Plasmonic-chip technology opens a new paradigm in RTWO chip design

Researchers developed a plasmonic meta-RTWO with ultrahigh phase accuracy and figure of merit (FOM), overcoming traditional designs' limitations. The technology enables applications such as real-time calibration of antenna arrays in 6G massive MIMO systems and subpicosecond synchronization for terahertz quantum communication.

Reconstructive spectrometers: hardware miniaturization and computational reconstruction

Reconstructive spectrometers combine miniaturized encoding hardware and computational reconstruction algorithms for high-fidelity spectral analysis. The field has seen significant advancements, enabling real-time spectral analysis in diverse environments, with applications ranging from healthcare to consumer electronics.

Robust mode-locking in all-fiber ultrafast laser by nanocavity of two-dimensional heterostructure

Researchers developed a novel robust saturable absorber by integrating a nanocavity heterostructure onto the fibre end facet, achieving single-pulse generation in approximately 85% of configurations. This enhances environmental tolerance and compactness for communication systems, high-precision sensing, and bio-photonics.

Manipulating the dispersion of terahertz plasmon polaritons in topological insulator meta-elements

A team of scientists developed a method to precisely control Dirac plasmon polaritons in two-dimensional materials, opening new possibilities for advanced nanophotonic technologies. By adjusting the spacing between coupled nanostructures, they increased the polariton wavevector by up to 20% and extended the attenuation length by more t...

Manipulating light to revolutionize quantum computing

Researchers from UNamur, Harvard, and MTU developed a photonic chip that achieves longer entanglement range using near-zero refractive index photonics, a breakthrough for quantum computing. This technology has the potential to enable more efficient lasers, sensitive optical sensors, and faster ultra-secure telecommunication tools.

Principal component analysis enhances 3D super-resolution microscopy

A new computational enhancement to structured illumination microscopy improves 3D imaging clarity and stability, addressing challenges of uniform illumination patterns in cells. Principal component analysis is used to uncover underlying order from complex signals, enabling more adaptive and robust reconstruction.

Revolutionizing remote sensing: Attowatt-sensitive dual-comb spectroscopy breaks through turbulence with photon-level precision

Researchers developed a photon-level dual-comb spectroscopy system, enabling high spectral resolution and long-term stability in turbulent conditions. The system successfully monitored atmospheric gases with unprecedented sensitivity, paving the way for next-generation optical sensing networks.

Single-gate electro-optic beam switching metasurfaces

Researchers developed a graphene-based single-gate electro-optic metasurface that controls light direction using a single electrode, simplifying device structure while maintaining high optical efficiency. The metasurface achieved large beam switching angles and demonstrated scalability for next-generation programmable photonic systems.

Efficient luminescent stable chichibabin diradicaloid for near-infrared imaging and photothermal therapy

Researchers developed a stable Chichibabin diradicaloid with high luminescence and photothermal conversion efficiency, enabling precise near-infrared imaging-guided tumor ablation. Its water-soluble nanoparticles showed excellent NIR imaging performance and achieved high photothermal conversion efficiency.

Single-photon source based on topological bulk cavity

Researchers have developed a novel quantum light source based on topological bulk cavity, achieving high extraction efficiency and robust QD-cavity interaction. The system exploits a topological bulk state to enhance light emission from a semiconductor quantum dot, with a predicted high single-photon extraction efficiency of up to 92%.

Electrically pumped surface-emitting amplified spontaneous emission from colloidal quantum dots

A new strategy is used to enable efficient carrier injection, effective thermal management, and strong optical confinement in colloidal quantum dot films. This leads to population inversion, confirming the achievement of electrically pumped surface-emitting amplified spontaneous emission.

Generation of femtosecond polygonal optical vortices from a mode-locked quasi-frequency-degenerate laser

Researchers have developed a method to generate femtosecond polygonal optical vortices with square, pentagonal, and hexagonal intensity distributions. The technique utilizes a passive mode-locked solid-state Yb:KGW oscillator at quasi-frequency-degenerate state, delivering high-power FPOVs with excellent power stability.

Hybrid Kerr-electro-optic frequency combs on thin-film lithium niobate

Researchers have developed a hybrid Kerr-electro-optic frequency comb on thin-film lithium niobate, resolving limitations in traditional approaches. The device achieves both large spectral coverage and dense line spacing, capabilities that were difficult to realize simultaneously.

3.8g, mass producible SiC diffractive waveguide without Rainbow Artifacts

A team of scientists developed a revolutionary SiC-based AR display platform that solves the challenges of lightweight design, full-color display, and mass production. The technology achieved excellent performance, including a high luminous efficiency and compact design with integrated vision correction.

Artificial intelligence-driven inverse lithography technology

AI-driven inverse lithography technology optimizes lithography modeling and mask optimization, improving resolution and overcoming computational bottlenecks. The integration of AI enables rapid synthesis of high-fidelity mask patterns, enhancing imaging quality and laying the foundation for large-scale industrial adoption.

Integration of QKD and high-speed classical communications in field-deployed MCFs

Researchers demonstrate real-world integration of QKD and 110.8 Tbit/s classical coherent optical communication over multi-core fibers, reducing noise and achieving stable quantum key generation. This work enables scalable integration of QKD and classical communication in future multi-core fiber networks.

Creating topological exceptional point by on-chip all-dielectric metasurface

Researchers create topological exceptional points using on-chip all-dielectric metasurfaces, eliminating Ohmic losses and suppressing zero-order diffraction background. The platform enables precise control of topological phases and polarization decoupling for next-generation wearable AR devices and advanced optical display technologies.

Blowing photonic “pinwheels”: Scientists create a “living” 3D topology of light

Researchers have sculpted photon spin into a three-dimensional toron, a knot-like structure that combines point-defect monopoles with swirling skyrmion tubes. This breakthrough enables the creation of robust optical circuits that could carry more data than current fiber links.

Reconfigurable versatile integrated photonic computing chip

Researchers developed a scalable versatile integrated photonic chip to handle static and dynamic temporal tasks, achieving high efficiency in processing various neural network models like CNN, FCNN, and PGRNN. The chip leverages multi-wavelength channels and dual-input-port structures for flexible all-optical processing.

Multi-photon, label-free photoacoustic and optical imaging of NADH in brain cells

Researchers have developed a novel label-free multiphoton photoacoustic microscope to detect endogenous NAD(P)H in brain cells, achieving remarkable imaging depths of up to 1100 μm. This technology enables real-time monitoring of metabolic dynamics in brain cells, offering new insights into neurodevelopment and disease mechanisms.

Twisting light: UNamur and Stanford collaborate on breakthrough in photonic devices

The research team developed an analytical model using lattice networks to understand the mechanism of twisted photonic crystals, allowing for efficient light beam control and concentration. The device has potential applications in tracking satellites, improving lasers, quantum computing, optical memories, and enhancing photocatalysis.

LAM | Integrated heterodyne grating interferometer for multi-dimensional atomic-level measurement

The innovative design eliminates optical path difference-induced errors, enabling simultaneous 3D measurement within a compact module. The technology boasts 0.25 nm resolution and outstanding linearity, making it a promising candidate for future semiconductor fabrication and atomic-scale production.

Intrinsic HOTI-type topological hinge states in photonic metamaterials

Researchers predict and experimentally demonstrate novel intrinsic HOTIs in homogeneous photonic metamaterials, with hinge states protected by higher-dimensional topological invariant. The discovery provides deeper insights into the interplay between geometry-induced gauge fields and topological invariants.

Array detection enables large localization range for simple and robust minflux

A new method called ISM-FLUX streamlines MINFLUX by using a 5x5 SPAD array detector to capture spatiotemporal information from fluorescence photons, allowing for precise localization over larger areas without losing accuracy. This innovation enables faster and more user-friendly molecular-scale imaging in biology.

Indirect path, direct impact: a novel patterning strategy for futuristic OLED displays

Researchers developed an indirect photopatterning approach to create micrometer-scale RGB pixel patterns in single phase network structure, enabling high resolution full-color OLEDs with over 3000 ppi. This method avoids destructive factors and can be conducted using conventional photolithography setups.