The new issue of Optica Quantum features 10 research articles on quantum information science and technology. New methods for compensating scattering and aberrations in entangled photon systems have been proposed, and ultrafast nonlinear wave mixing spectroscopy schemes employing coherent light pulses and vacuum modes are being explored.
The new fringe photometric stereo technique reduces scanning time by over two-thirds while achieving micrometer-level accuracy, ideal for real-time scanning applications such as industrial inspection and medical procedures. The approach 'feels' the surface by projecting light patterns, improving precision measurements.
A new microscope-integrated OCT system has been developed to identify tumor margins during brain surgery, providing high-resolution images of subsurface anatomy. The system has shown promising results in clinical studies, with the potential to improve outcomes for neurosurgery procedures.
A new wearable laser device can non-invasively monitor changes in brain blood flow and volume, offering a simple way to assess stroke risk. The device uses speckle contrast optical spectroscopy to detect early physiological signs of increased stroke risk.
Researchers developed a method combining AI and thermal cameras to enhance weightlifting training, providing data-driven insights for targeted strategies. The approach enables real-time tracking of muscle activation, strain detection, and temperature changes, ultimately helping athletes optimize performance and safety.
Bifocal lenses with adjustable focal intensities are created by applying external voltage to bilayer liquid crystal structures. The new design enables polarization imaging and edge imaging, highlighting the outlines of objects with fine details.
Researchers have developed a new optical atomic clock that uses a single laser and doesn't require cryogenic temperatures, achieving similar performance to traditional clocks. The innovative design eliminates the need for extreme cooling, allowing for hot atoms and a simplified clock architecture.
A new smartphone-based digital holographic microscope enables precise 3D measurements and has potential applications in medical diagnostics, education, and resource-limited settings. The portable device uses a simple optical system created with a 3D printer and calculates reconstructions based on a smartphone.
Researchers developed hybrid single-photon cameras for high-dimensional spatial correlations, enabling faster measurements of quantum optical phenomena. They also reconstructed photon number distributions in microresonators to characterize their performance without specialized detectors.
Researchers have developed a new multi-functional device that enables simultaneous optical, microwave, and strain control of multiple solid-state color centers. The device is promising for advancing the scalability of solid-state color centers in larger quantum computers and networks.
Researchers have achieved data rates of up to 424Gbit/s using plasmonic modulators for free-space optical communication. This technology could provide high-speed, high-capacity data transmission for space missions with lower latency and less interference.
The study compares nerve fiber orientation captured with specialized MRI and OCT approaches, laying groundwork for combining these imaging techniques. The findings show strong potential for PS-OCT to validate dMRI data, providing valuable insights about the microstructural organization of nerve fibers.
Researchers developed a new two-photon fluorescence microscope that captures high-speed images of neural activity at cellular resolution, providing insights into brain function and neurological diseases. The microscope uses an adaptive sampling scheme to image neurons in real time, reducing damage to brain tissue.
A new fluorescence detection system can detect fluorescent proteins from bacteria in water down to levels of less than one part per billion, meeting the World Health Organization’s criteria for detecting fecal contamination. The lensless fluorometer reduces device cost, size and weight while providing better performance.
Researchers developed a new two-photon polymerization technique using two lasers to reduce the power requirement of femtosecond lasers. This approach enables increased printing throughput and lower cost, impacting manufacturing technologies in consumer electronics and healthcare sectors.
Researchers have developed a new 3D method for fast-moving object tracking at unprecedented speeds, with potential applications in autonomous driving, industrial inspection and security surveillance. The approach uses single-pixel imaging to calculate the object's position in real-time, reducing data storage and computational costs.
Researchers have developed a new photonic chip that can process, transmit and reconstruct images in nanoseconds, eliminating optical-electronic conversions. This technology holds promise for revolutionizing edge intelligence in machine vision applications.
Researchers have developed a compact, palm-sized light field camera that simultaneously captures 3D spatial and spectral information in a single snapshot. The camera uses inkjet printing to create its key optical components, enabling efficient manufacturing and customization.
The new approach uses multi-contrast x-ray images combined with machine learning to distinguish threatening materials from non-threatening ones. It achieved a near-perfect recall rate of 99.68% and could be useful for security screening and medical imaging applications.
Researchers have developed a highly sensitive fiber optic gyroscope to monitor ground rotations caused by earthquakes in the Campi Flegrei area. The sensor, based on the Sagnac effect, can detect small to medium local earthquakes and provide valuable insights into seismic activity.
A new approach uses artificial intelligence to turn low-quality images into high-quality ones, enhancing the image quality of metalens cameras. This technology could make these cameras viable for intricate microscopy applications and mobile devices.
Researchers have developed new optical tweezers that can stably trap large and irregularly shaped particles using contour-tracking technology. This advancement could expand light-based trapping to a wider range of objects, including groups of cells, bacteria, and microplastics.
Canadian researchers have developed a new 3D printing method called blurred tomography that can rapidly produce microlenses with commercial-level optical quality. The method uses projected light to solidify a light-sensitive resin in specific areas, allowing for rapid prototyping of optical components.
Researchers have developed a compact and lightweight single-photon airborne lidar system that can acquire high-resolution 3D images with a low-power laser. The system uses single-photon detection techniques to measure time-of-flight, enabling highly accurate 3D mapping of terrain and objects even in challenging environments.
A new approach uses a smartphone screen to create full-color 3D holographic images by leveraging computer-generated holography (CGH) and an optical component called a spatial light modulator. The method has the potential to enhance near-eye displays in virtual reality headsets, creating more realistic and interactive user experiences.
The Optical Fiber Communications Conference and Exhibition (OFC) 2024 will feature cutting-edge tech demonstrations, including quantum technology advancements, 800ZR and Coherent PON. Industry leaders will discuss the latest in optical technology, with a focus on innovation and connectivity.
A new open-top light-sheet microscope with swept illumination enhances the technique for nondestructive 3D pathology. The improved design quadruples the field of view and doubles optical sectioning ability, making it suitable for analyzing complex tissue structures.
Researchers developed a wearable device for non-invasive monitoring of hemodynamic indicators like heart rate, blood pressure, and oxygen saturation. The photoacoustic imaging watch offers valuable insights into disease diagnosis and treatment.
Researchers developed a new catheter-based device combining FLIM with polarization-sensitive OCT to image atherosclerotic plaques. The hybrid approach provides unprecedented information on plaque morphology, microstructure, and biochemical composition.
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.
Researchers developed an all-light communication network that combines different types of light sources to ensure connectivity in various environments. The network enables real-time data transmission between nodes, facilitating applications such as video conferencing, sensor data exchange, and Internet of Things services.
Researchers developed a wearable sticker that can detect subtle hand movements, enabling individuals with disabilities to communicate more easily. The sensors show high sensitivity and accuracy in recognizing gestures and translating them into words or commands.
A study demonstrates the potential of transceiver-based sensing for actively monitoring and improving the stability of fiber networks. Researchers used a coherent transceiver prototype to detect polarization changes that preceded a cable break in a live network, showing promise for real-time monitoring and proactive network management.
Researchers developed a compact indium phosphide (InP)-based coherent driver modulator that achieved a record-high baud rate and transmission capacity per wavelength, exceeding existing CDMs. The new CDM demonstrated an unprecedented net bit rate of 1.8 Tbps over 80-km standard single mode fiber in the C+L band.
Researchers developed a spiral-shaped lens that provides clear focus at different distances in varying light conditions, potentially revolutionizing ophthalmology. The lens works by creating multiple clear focus points through optical vortices, allowing for improved depth perception and visual acuity.
Using optical traps, researchers controlled bacterial aggregation and biofilm development, finding different types of lasers can stimulate or suppress growth. The study opens up possibilities for creating microscopic building materials from bacteria.
Researchers have developed a new III-V semiconductor nanocavity that confines light at levels below the diffraction limit, enabling fast data transmission and reduced energy consumption. The achievement demonstrates deep sub-wavelength confinement of light in a topology-optimized InP nanocavity.
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.
The researchers successfully created a stable hybrid laser by 3D printing micro-optics onto fibers, reducing the size and cost of traditional lasers. The new design enables high-power laser sources with compactness and robustness, opening up opportunities for applications such as autonomous vehicles, medical procedures, and lithography.
Researchers developed an X-ray imaging technique that produces detailed images of living organisms at high resolution while minimizing radiation exposure. This advance enables small organisms to be studied over longer periods, revealing new insights into dynamic processes.
The new system enables infrared non-line-of-sight imaging, improving safety and efficiency for unmanned vehicles and robotic vision applications. Spatial resolution of less than 2 cm achieved at both 1560 and 1997 nm wavelengths.
Researchers developed a new OCT approach to directly image coordination of tiny hair-like structures in live organisms, giving a powerful tool to investigate cilia's role in the female reproductive system. The technique revealed unexpected behaviors that contradict current views and suggested new roles for cilia.
Researchers developed an easy-to-use optical chip that can configure itself for different functions, enabling optical neural network applications. The chip achieves positive real-valued matrix computation and demonstrates optical routing, low-loss light energy splitting, and matrix computations.
The new resonators exhibit a record low UV light loss, enabling the development of miniaturized devices for applications such as spectroscopic sensing, underwater communication, and quantum information processing. The researchers achieved this by combining optimized design and fabrication techniques with amorphous alumina materials.
A wearable optical device using laser speckle imaging detects peripheral vasoconstriction caused by postpartum hemorrhage, providing an early warning system. The device shows promise in detecting heavy bleeding before it becomes severe, with a highly sensitive response to blood flow changes.
The new fabrication approach allows for the creation of a stretchable dipole antenna that can be used in wearable medical devices, separating mobile devices via flexible antennas to form a wireless body-area network. The resonant frequency of the antenna can be tuned by varying applied strain.
Researchers developed a new diffraction-gated real-time ultrahigh-speed mapping (DRUM) camera that captures dynamic events in a single exposure at 4.8 million frames per second. The camera uses off-the-shelf components and is fast enough to capture highly dynamic biomedical processes or enable high-speed lidar systems.
Researchers developed an automated viral plaque assay method combining time-lapse holographic imaging and deep learning to greatly reduce detection time. This technique can aid in developing new vaccines and antiviral drugs by expediting the testing process, allowing for faster response times to virus-induced health emergencies.
Researchers have created chip-based optical frequency combs using dissipative Kerr solitons, increasing output power for applications like atomic clocks. The advancement paves the way for highly portable precision metrology devices.
Researchers have developed a new way to sort cells by type using light-based stimulated Raman spectroscopy, offering a label-free and nondestructive approach for various biomedical applications. The technique enables the separation of cells based on their intracellular chemical composition in high-throughput manner.