Articles tagged with Light Polarization
Scientists create a moiré metasurface to map right- and left-handed regions in materials, visualizing chirality as two-dimensional images. The new approach resolves chirality distributions with a resolution of approximately 100 μm.
Researchers at the University of East Anglia have discovered that light can be programmed using its natural geometry, allowing for the creation of structured light with unique properties. This breakthrough has far-reaching implications for fields such as medicine, data transmission, and quantum technologies.
A new laser source generates a specific type of light source called a frequency comb in the mid-infrared region, paving the way for miniaturization. The device overcomes engineering challenges to produce bright, stable, and compact frequency combs.
Hyperbolic localized plasmon resonances were achieved in an anisotropic two-dimensional crystal, enabling tunable optical chirality and potential applications in miniaturized photonic components, spectroscopic sensors, and molecular fingerprinting.
The Harvard researchers' new device is elegantly designed to be tunable, with a bilayer design that becomes geometrically chiral and able to 'read' chiral light. By using the MEMS device to continuously vary the twist angle and interlayer spacing, the team showed they could tune the device's intrinsic ability to read different chiral l...
A team from Harvard and University of Lisbon found that silica, a low-refractive index material, can be used for making metasurfaces despite long-held assumptions. They discovered that by carefully considering the geometry of each nanopillar, silica behaves as a metasurface, enabling efficient design of devices with relaxed feature sizes.
The team developed a new method to produce ultrafast squeezed light, which can fluctuate between intensity and phase-squeezing by adjusting the position of fused silica relative to the split beam. This breakthrough could lead to more secure communication and advance fields like quantum sensing, chemistry, and biology.
Scientists at Linköping University have made a significant breakthrough in creating controllable flat optics using nanostructures on a flat surface. By precisely controlling the distance between antennas, they achieved up to tenfold improvement in performance, opening up new avenues for applications such as video holograms and biomedic...
A team of scientists has achieved full polarization control of photons through photonic molecules consisting of two 1D photonic crystal nanobeam cavities. The coupling between PMs is influenced by air gap d and relative displacement s, allowing for high controllability. This breakthrough enables direct control of the local optical fiel...
Researchers have designed an optical device that functions as an optical black hole or white hole, behaving like a cosmic object that either swallows or repels light. This device relies on coherent perfect absorption of light waves and offers new possibilities for manipulating light-matter interactions.
The study successfully manipulated the formation of left-handed or right-handed helical aggregates using precise light control, exhibiting promising insights into novel functional materials. The researchers found that residual aggregates acted as nucleation sites forming oppositely directed helical assemblies under certain conditions.
Integrated photonic polarizers with 2D reduced graphene oxide are reported, achieving up to 47-dB polarization-dependent loss and 16-dB polarization extinction ratio. The devices exhibit better performance than those with graphene oxide, demonstrating the potential of 2D materials in high-performance optical polarizers.
A new bilayer metasurface, made of two stacked layers of titanium dioxide nanostructures, has been created by Harvard researchers. This device can precisely control the behavior of light, including polarization, and opens up a new avenue for metasurfaces.
The device enables precise control over terahertz wave polarization, revolutionizing applications such as data transmission, imaging, and sensing. This innovation promises to transform fields like wireless communication and biomedical imaging.
Researchers at Indian Institute of Science use polarized light to measure glucose concentration with near clinical accuracy in water, serum solutions and tissue samples. The technique exploits the interaction between glucose molecules and polarized light to create unique sound wave patterns.
Researchers have created quantum holograms using metasurfaces and nonlinear crystals, enabling precise control over entangled information. The technology holds promise for practical applications in quantum communication and anti-counterfeiting, with potential to increase information capacity and reduce system size.
A team of scientists developed a general polarization metrology method capable of detecting SoP on any HOPS, featuring miniaturized size and simple detection process. The metasurface photonics polarization clock enables fully characterization of beams via a single measurement.
Researchers have created a device that combines the properties of insect exoskeletons, which strongly reflect left circularly polarized light, with conductive polymers. The resulting material exhibits excellent optical properties and responsiveness to external fields.
Researchers developed a theoretical model predicting substantial increase in OLED brightness by leveraging polaritons, promising improved efficiency and brightness. The study proposes new materials discovery and architecture development to achieve single-molecule strong coupling or tailored molecules for polariton OLEDs.
A new hybrid microscope allows scientists to image the full 3D orientation and position of an ensemble of molecules, such as labeled proteins inside cells. This can reveal the real biology hidden from just a position change of a molecule alone.
Scientists develop mechanochromic luminescence using chiral pyrenylprolinamides, a significant step towards widespread implementation of materials with switchable solid-state CPL. The findings provide new design guidelines for creating molecules that enable solid-state CPL switching through mechanical stimuli.
A team of researchers from Singapore University of Technology and Design has developed a new type of metasurface that can generate circularly polarized light without complex optical setups. The metasurface exhibits chirality, enabling it to convert arbitrary optical excitation into circularly polarized light at specific frequency ranges.
Researchers demonstrate that light can interact with a single-atom layer of thallium-lead alloys, restricting spin-polarized current flow to one direction. This phenomenon enables functionality beyond ordinary diodes and paves the way for ultra-fine two-dimensional spintronic devices.
Researchers have developed a novel imaging device called Nonlocal-Cam that extracts additional spectral and polarization information, empowering new applications in machine vision and microscopy. The camera leverages nonlocal dispersion in optically active materials to capture hidden data.
Chinese researchers have developed an on-chip integrated polarization photodetector inspired by desert ants' ability to perceive polarized sunlight. The team created a high-crystalline perovskite single-crystal-thin film with quadridirectional grating arrays, enabling a simple and cost-effective polarization imaging system.
Researchers at Singapore University of Technology and Design have designed a novel tool inspired by a spiral ladder to control circular polarised light. The bilayer metasurface structure can be tailored to emit waves with specific angles, wavelengths, and polarisation properties.
Researchers have identified a subcycle conservation law between angular momentum and energy during strong-field ionization, as revealed by the analysis of correlated spectrum of angular momentum and energy. This law remains applicable down to the subcycle level, offering new understanding of light-matter interactions.
Researchers at UCLA developed a new type of imaging technology that forms images in only one direction, enabling efficient and compact methods for asymmetric visual information processing and communication. The technology works exceptionally well under partially coherent light, achieving high-quality imaging with high power efficiency.
Scientists have developed a groundbreaking 2D electro-polaritonic platform that integrates detection with the same material, overcoming limitations of traditional optical techniques. This breakthrough enables spectrally resolved electrical detection of nanoresonators and significantly enhances photodetection efficiency.
Researchers developed a microchip that captures exosomes from blood plasma to identify signs of lung cancer, achieving 10x faster detection and 14x greater sensitivity. The chip uses twisted gold nanoparticles to distinguish between healthy patients and those with lung cancer.
A new structure of light has been discovered that can accurately measure chirality in molecules, a property of asymmetry important in physics, chemistry, biology, and medicine. This 'chiral vortex' provides an accurate and robust form of measurement, allowing for the detection of chiral biomarkers.
Researchers at Nagoya University developed a new type of label that uses fluorescent dyes to create uncrackable coded tags. These labels produce unique visual patterns that are difficult to replicate without specialized tools and knowledge.
The team achieves nanofabrication of nanostructures buried deep inside silicon wafers, enabling sub-wavelength and multi-dimensional control directly inside the material. The breakthrough opens up new possibilities for developing nano-scale systems with unique architectures.
Researchers discovered a promising approach to manipulating light in an ultrathin material that could be useful for devices like LEDs and medical imaging. The study used SLAC's world-leading instrument to visualize the electric and magnetic fields of terahertz pulses, indicating circular polarization in the material.
This breakthrough enables generation and manipulation of light with both spin and orbital angular momentum at terahertz frequencies. The new technique holds promise for advancing terahertz technologies in fields like spectroscopy, sensing, and communication.
Researchers developed a 3D metamaterial capable of detecting polarization and direction of light, overcoming limitations of conventional optical devices. The breakthrough technology utilizes pi-shaped metal nanostructures with numerical aperture-detector polarimetry to analyze light distribution.
Researchers found that nocturnal bull ants can detect exceedingly low levels of polarised moonlight produced throughout the lunar month to navigate during the night. The ants altered their direction in response to changing rotations of overhead lunar light polarisation, suggesting a stable cue across the lunar cycle.
Researchers found that chiral gold nanoparticles exhibit high selectivity for left- or right-handed circularly polarized light with a dissymmetry factor of approximately 0.7, outperforming previous materials. The findings suggest potential applications in anti-counterfeiting and quantum information using circularly polarized light.
A groundbreaking study introduces a method for sorting vector structured beams with spin-multiplexed diffractive metasurfaces, promising significant advancements in optical communication and quantum computing. This technology enables precise control over complex light beams, opening new avenues for scientific exploration.
Researchers develop a new photopatterning technique to create dual-mode films with polarization and structural patterns, enabling secure authentication and potential applications in high-level security.
Researchers found that a photon's polarization is topological, meaning it doesn't change as it moves through materials and environments. This property can help design better light beams for heating and measuring plasma, which could increase fusion efficiency.
A new paper demonstrates a low-loss and polarization-independent integrated optical colorless ROADM with a 32 x 4 optical switch. The device boasts below 2 dB fiber-to-fiber loss at 1550 nm, making it suitable for applications such as optical neural networks and integrated quantum photonics.
Scientists at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a compact, single-shot polarization imaging system that can provide a complete picture of polarization. The system uses two thin metasurfaces to capture the most complete polarization response of an object in real-time.
Scientists have developed a novel universal light-based technique to control valley polarization in bulk materials, overcoming previous limitations. The discovery enables the manipulation of valley population without being restricted by specific material properties.
A German-Indian research team has achieved a significant breakthrough in developing miniaturized optical isolators by utilizing ultra-thin two-dimensional materials. The researchers successfully rotated the polarization of visible light by several degrees under small magnetic fields, paving the way for on-chip integration of optical co...
A team of researchers has successfully integrated a metasurface with photonic integrated circuits, enabling fast and tunable control over light manipulation. The device can shape any wavefront in reconfigurable arbitrary polarization states at speeds of up to 1.4 gigahertz.
Researchers pioneer technique to control polaritons, unlocking potential for next-generation materials and surpassing performance limitations of optical displays. The breakthrough enables stable generation of polariton particles with enhanced brightness and color control.
Researchers have developed two innovative methods for mass-producing metalenses, reducing production costs by up to 1,000 times. The team achieved successful creation of large-scale infrared metalenses with high resolution and exceptional light-collecting capabilities.
Researchers developed a new tool to improve the accuracy of electronic devices that measure plant leaf color to assess health. The software uses polarization to account for variations in light and reduce errors caused by glare.
Researchers have developed a novel method for controlling light polarization using liquid crystals, allowing for dynamic manipulation of holographic images. This breakthrough has the potential to revolutionize various fields, including augmented reality, data storage, and encryption.
The T2oFu method offers a new approach to quantitative phase and polarization-sensitive tomography, enabling high-contrast images of muscle fibers with implications for diagnosing skeletal myopathies. The technique has been successfully tested on heart tissue samples with cardiac amyloidosis, providing promising results.
Researchers have developed a new way to control and manipulate optical signals by embedding a liquid crystal layer into waveguides created with direct laser writing. The new devices enable electro-optical control of polarization, which could open new possibilities for chip-based devices and complex photonic circuits.
A UCF-developed technology uses a plasmonic platform to detect the chirality of molecules with high precision, enabling more accurate drug development and therapies. The platform improves upon current methods with sensitivity nearly 13 orders of magnitude greater.
A new research proposes a hemispherical shell shape to optimize organic photovoltaic cells, achieving a 66% increase in light absorption and improved angular coverage. The study presents advanced computational analysis, revealing the remarkable capabilities of this innovative design.
Researchers at Aston University have discovered that aging skin exhibits distinct optical properties under polarised laser light. This finding could lead to the development of non-invasive light-based techniques for early detection and monitoring of skin conditions, including cancer.
A novel pancake optics system is proposed to address the challenges of low optical efficiency in VR and MR displays. The system incorporates a nonreciprocal polarization rotator, which enables a lossless design with improved optical efficiency.
A new technology uses meta-optical devices to perform thermal imaging, providing richer information about imaged objects. The approach can be used for various applications such as autonomous navigation, material identification, security, and medical imaging.
Researchers have developed a new approach to polarization-independent liquid-crystal phase modulation using a light-controlled azimuth angle (LCAA) process. This process creates single-layer, multi-microdomain, orthogonally twisted structures with precise alignment, enabling high phase retardation and low polarization dependence.
Researchers developed three diffractive deep neural networks using orbital angular momentum to recognize objects in images, achieving accuracy comparable to wavelength and polarization-based models. The technology has potential for real-time processing applications like image recognition and data-intensive tasks.
Researchers at Rice University have discovered a way to transform a rare-earth crystal into a magnet by using chirality in phonons. Chirality, or the twisting of atoms' motion, breaks time-reversal symmetry and aligns electron spins, creating a magnetic effect.