Articles tagged with Optics
A single-layer dielectric metasurface uses Möbius-inspired polarization-path inversion to achieve versatile control of light in both forward and backward directions. The device encodes six independent optical channels, including three combinations of wavelength and polarization states.
A team of scientists developed a novel LiDAR architecture featuring an ultra-high frame-wise point acquisition rate, a 102° wide FOV, and an angular resolution of 6.5 mrad. The system overcomes conventional trade-offs, enabling high-speed and high-resolution imaging.
Researchers developed a multilayer grating solution to enhance RIXS efficiency in the tender X-ray range, reducing acquisition time from hours to minutes. The new spectrometer covers both soft and tender X-ray regions, offering improved performance for studying 4d transition metal materials.
Researchers develop new material with reversible photoluminescence color switching upon heating or water exposure, opening pathway for smart optical materials. Flexible films with outstanding performance for temperature sensing and information encryption.
Researchers develop method for far-field superresolution imaging by disrupting spatial shift-invariance assumption in classical imaging systems. The new method, k-space superoscillation, achieves imaging resolution more than twice the diffraction limit without post-processing, outperforming traditional real-space superoscillatory systems.
This study reveals that a femtosecond laser can induce a rise in electronic temperature, transiently blocking optical absorption and enabling multicolor modulation from a single material platform. The discovery opens a new pathway toward ultrafast, broadband, and energy-efficient photonic devices.
Researchers develop a new approach to grow high-quality III-V active material on silicon in the form of ordered nano-ridge arrays, supporting symmetry-protected bound states in the continuum mode. This enables strong in-plane confinement and vertical surface emission from a compact device footprint.
Researchers at the University of Colorado Boulder have developed high-performing optical microresonators that can trap light and build up its intensity. By guiding light smoothly through the resonator, they dramatically reduced light loss, allowing photons to circulate longer and interact more strongly inside the device.
The Harvard team developed a new microfabrication method to produce high-performance, curved optical mirrors with extremely smooth surfaces. The mirrors can control light at near-infrared wavelengths, enabling fast and efficient quantum networking.
A nationwide cohort study found that semaglutide initiators had a significantly higher risk of developing nonarteritic anterior ischemic optic neuropathy compared to sodium-glucose cotransporter-2 inhibitor initiators. The absolute risk was low, but clinicians and patients should be aware of this rare but evident increased risk.
Scientists report a scalable photonic neuron that processes complex data in real-time, achieving ultra-low latency. The architecture directly addresses scalability challenges and enables reconfigurable operation with temporal memory.
The AI-enhanced OC-PAM system allows for longitudinal tracking of organoids, evaluating drug response and viability. It also detects rare cells within dense spheroids using radiomics-based analysis.
Researchers develop a rigid organic crystal that emits red light under UV irradiation through excimer formation and generates green light through second harmonic generation under near-infrared exposure. The dual-mode optical behavior operates independently within the same crystal without interference.
Researchers have successfully demonstrated device-independent quantum key distribution over 100 km optical fibers, marking a significant step towards a quantum-secure internet. The breakthrough achieves provably secure quantum key generation over long distances using entangled atoms linked by high-quality optical fibers.
Researchers develop a new method to fabricate micro-supercapacitors with graphene hybrid nanostructured electrodes, achieving high power density and energy density. The technique enables precise control over electrode materials and structures, leading to improved device performance.
Researchers successfully decode 10 weak classical signals simultaneously using continuous-variable quantum dense coding in 20-km fiber channels. The channel capacity of deterministic entanglement-assisted quantum communication is increased compared to classical communication with coherent state.
Researchers have created a hybrid polaritonic crystal that enables dynamic tuning of Bloch modes by combining low-loss α-MoO3 with electrically tunable graphene. The material exhibits electrical control over its band structure, allowing for selective enhancement of Bloch mode resonance and on-demand switching of far-field radiation.
A new window technology shields buildings from EMP threats while maintaining transparency. The innovative design offers broadband EMP protection with high optical transparency, suitable for practical architectural applications.
Researchers developed a phase multiplication technique harnessing laser feedback and cavity dynamics to enhance ranging resolution. Higher-order harmonics exhibit higher phase sensitivity, allowing for improved measurement accuracy.
Researchers have demonstrated an angstrom-scale electroplasmonic platform enabling giant modulation (2000% V⁻¹ ) of near-field nonlinear optical effects across a broad spectral range. The discovery provides a novel scheme for highly efficient electro-optical conversion in an infinitesimal spatial scale.
Researchers at ICFO have successfully created a supersolid state of matter by coupling ultracold potassium atoms to light, directly imaging the crystal-like structure and its oscillating spacing. The team observed stripes forming and vanishing as the cloud size expanded or shrunk, behavior related to its superfluid nature.
Researchers have introduced a new dimension to holography called the optical operator, enabling scalability and security in holographic systems. The team demonstrated a 9-fold increase in channel capacity and a 2-bit operator-multiplexed hologram with ultra-secure encryption capabilities.
A new system integrates terahertz spectroscopy with deep learning to accurately image, detect, and classify explosives. It achieved a remarkable average classification accuracy of 99.42% at the pixel level for exposed samples.
Researchers developed a comprehensive framework to describe intensity fluctuations in Spontaneous Brillouin scattering, linking its stochastic behavior to system parameters. Experimental validation confirmed theoretical predictions, revealing the universal fundamental precision limit imposed by SpBS noise on Brillouin metrology.
Researchers developed a new method for self-aligned laser transfer printing using Thermal Conductivity Gradient Carbon (TCGC) stamp, ensuring synchronous chip release and mitigating transfer errors. The SALT technique enables heterogeneous integration of diverse micro-objects onto various challenging surfaces with high accuracy and siz...
Researchers at the University of Rochester create a new process to turn ordinary metal tubes unsinkable by etching micro- and nano-pits on their surface, making them superhydrophobic. The tubes stay afloat in water, even when damaged or submerged for extended periods.
Researchers develop novel thermometric method based on stimulated Brillouin scattering in gases, offering predictable and calibration-free temperature measurements. The technique enables direct retrieval of temperature from the Brillouin frequency shift, making it inherently absolute.
Physicists report the first experimental observation of quantum state transfer enabled by hidden symmetries in a network of laser-written optical waveguides. This discovery dramatically expands the design space for quantum circuits, opening the gates towards new classes of networks for secure quantum communication and cryptography.
Researchers have successfully controlled the rotation of molecules suspended in liquid helium nano-droplets using a new optical centrifuge. This breakthrough enables scientists to study the behavior of exotic, frictionless superfluids and understand how molecules interact with the quantum environment at various rotational frequencies.
Researchers used a custom-designed microscope to image individual lunar regolith grains, revealing the carriers and origins of their magnetism. The study provides insights into the Moon's internal structure and thermal evolution history.
A new type of optical atomic clock using ytterbium-173 ions has the potential to revolutionize timekeeping. The clock combines the high accuracy of single-ion clocks with the improved stability of multi-ion operation, making it a promising candidate for the next generation of atomic clocks.
The 2D charge-transfer Mott insulator VOCl demonstrates a strong nonlinear response and record nonlinear optical anisotropy. Its third-harmonic generation anisotropy ratio reaches ρTHG = 187, the highest known among van der Waals materials.
Guosong Hong was honored with the inaugural award for his groundbreaking research on tissue clearing, a technology that makes organs visible to visible light. His work has far-reaching applications in noninvasive diagnostic imaging and clinical translation.
Developed by a collaborative team of researchers, the novel metasurface-based platform harnesses quantum interference to enable precise sensing of subwavelength lateral displacement. The system achieves high accuracy while reducing the required number of detected photons, making it suitable for next-generation semiconductor lithography.
Researchers have developed two spectroscopic techniques based on quartz tuning fork detection, Quartz-enhanced photoacoustic spectroscopy (QEPAS) and light-induced thermoelastic spectroscopy (LITES), to improve gas sensing technology. QEPAS techniques enhance system signal strength using high-power lasers, novel excitation sources, and...
A new framework models pointing error in QKD optical wireless systems, clarifying its role in degrading secure key generation. The study found that increased beam waist and asymmetrical beam misalignment degrade performance, while increasing receiver aperture size and average photon numbers can improve it.
Researchers overcome spatial resolution limit of sum-frequency generation (SFG) spectroscopy by utilizing plasmonic near-field confinement. This breakthrough enables direct visualization of nanoscale orientation heterogeneity in interfacial molecular domains.
Researchers develop novel approach to isolate density fluctuations from signal measurements, achieving superior long-term stability. The method uses a three-dimensional atomic density model and neural networks to estimate and compensate for these disturbances in real-time.
Researchers introduce a new class of topological phases, termed multi-topological phases (MTPs), which offer an avenue for understanding physical phenomena not explicable with conventional band topology. MTPs are characterized by distinct multiple topological invariants linked to their own boundary states.
Researchers investigated energy shifts in 173Yb+ ions, combining experiment and theory to uncover the nucleus's magnetic field distribution. The study provides an experimental foundation for precise clocks and fundamental physics tests using complex ions like Yb+.
Researchers developed a novel camouflage strategy using rough surface, silver nanowires, and biometric coatings to deceive multiple detection methods simultaneously. The device effectively simulated the spectral characteristics of vegetation and reduced infrared emissivity.
Scientists at SwissFEL have developed a technique known as X-ray four-wave mixing, allowing them to access coherences in matter for the first time. This breakthrough has the potential to illuminate how quantum information is stored and lost, ultimately aiding the design of more error-tolerant quantum devices.
Columbia physicists develop new method to scale neutral-atom arrays using metasurfaces, enabling creation of 2D arrays with thousands of trapped atoms. The technology has the potential to benefit quantum computing and other neutral-atom quantum technologies.
Oliver Zielinski's contributions to oceanography have significantly advanced understanding and stewardship of the ocean through innovative research and leadership. He has led applications of artificial intelligence for environmental monitoring and mentored early-career scientists.
Uriel Levy has been appointed as the inaugural editor-in-chief of SPIE's Advanced Quantum Catalyst journal, which will serve as a premier venue for real-world quantum applications. The journal aims to bridge the gap in quantum research publishing landscape by emphasizing implementation, integration, and cross-disciplinary applications.
Researchers from the UJI Optics Group have developed a new method to correct image aberrations in single-pixel microscopy using a deformable lens. This approach combines an adaptive lens with a sensor-less method that evaluates image sharpness directly from the data, producing sharper images close to the physical resolution limit witho...
The American Physical Society's Global Physics Summit will convene over 14,000 physicists worldwide for groundbreaking research presentations. The event will feature both in-person and online experiences, including scientific sessions, exhibits, and networking events.
Researchers have developed a strategy to enhance the stability of CsPbI3 perovskite nanoplatelets by incorporating formamidinium, which improves bulk thermodynamic stability and surface ligand binding. This approach leads to highly oriented superlattices with improved linear polarization of light emitted.
Physicists at Trinity College Dublin propose a new means of capturing useful energy from light sources like sunlight, lamps, and LEDs. Theoretical analysis may lead to the development of optical devices that can channel light energy into a concentrated beam.
A team of scientists creates a dynamically reconfigurable topological photonic platform that can control local topological properties in real-time using spatially patterned optical pumping. This enables the topological edge mode to be steered, redirected or blocked entirely by adjusting an external pump profile.
A new 'pocket microscope' technology enables direct molecular imaging with femtogram precision, transforming pathology workflows and opening new frontiers in space biology. The deep-ultraviolet ptychographic pocket-scope (DART) provides label-free spectroscopic contrast without external labels.
Researchers at the Paul Scherrer Institute have successfully implemented mode-locking to generate coherent trains of X-ray pulses with unprecedented temporal structure. This achievement enables attosecond science and opens up new experimental possibilities, including precise timing of phenomena in gases, liquids, and solids.
Researchers at Princeton University have developed a new technique to convert low-energy light into high-energy LEDs, improving the ability to upconvert green light to blue or ultraviolet light. The method uses plasmonics to boost upconversion on a thin metal film, reducing the power needed by 19 times compared to previous setups.
Researchers have developed a novel approach to quantum memories using 3D-nanoprinted light cages filled with atomic vapor. The technology enables highly efficient conversion of guided light pulses into collective atomic excitations, with storage durations of several hundred nanoseconds. The platform's compact size and room-temperature ...
A new sample prior based point spread function (PSF) decoupling method enables accurate system characterization without theoretical assumptions. Regular biological samples act as modulators to optimize the system PSF, allowing non-parametric and adaptive imaging.
Researchers have developed a non-invasive technique, fast raster-scan optoacoustic mesoscopy, to observe microvascular endothelial dysfunction at the single-capillary level. The study found that this technology can resolve dynamics of individual cutaneous capillaries and provide better inter-day repeatability compared to existing methods.
Researchers review transfer printing techniques for integrating III-V semiconductor devices into silicon photonics, enabling diverse optical functionalities and applications. The technology offers precise control over thin film parameters and precise device placement.
Researchers developed LSTM-assisted optical fiber interferometric sensing to overcome the limitation of free spectral range, achieving simultaneous high sensitivity and wide measurement range. The technology uses gating mechanisms and sequence learning capabilities of LSTM to model long-term dependencies in complex interference spectra.
New review article highlights advancements in VLMs, enabling unified, intelligent approach to complex images. Key milestones include Vision Transformer and CLIP, bridging visual understanding and language generation.
The Advanced Photonics Young Innovator Award honors outstanding papers published in SPIE-CLP's journal over the past five years. Seven recipients are celebrated for their diverse range of innovative research, which shapes the future of optics and photonics.