Current Photonics News and Events

Current Photonics News and Events, Photonics News Articles.
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Artificial intelligence predicts nonlinear ultrafast dynamics in optics
Researchers at Tampere University have successfully used artificial intelligence to predict nonlinear dynamics that take place when ultrashort light pulses interact with matter. This novel solution can be used for efficient and fast numerical modelling, for example, in imaging, manufacturing and surgery. The findings were published in the prestigious Nature Machine Intelligence journal. (2021-02-19)

International study reveals exceptional property of next generation optical fibers
Researchers from the Optoelectronics Research Centre (ORC) and Universite Laval, Canada, have successfully measured for the first time back-reflection in cutting-edge hollow-core fibres that is around 10,000 times lower than conventional optical fibres. (2021-02-15)

Highly efficient metasurface poised to improve communication and biosensing
Researchers have created a new plasmonic metasurface that achieves record high light efficiency over the entire centimeter-scale metasurface. The advance makes the new nanostructured thin film practical for use in a variety of applications from light-based communication to fluorescence-based biosensing. (2021-02-11)

Wafer-scale production of graphene-based photonic devices
Graphene Flagship researchers have devised a wafer-scale fabrication method that paves the way to the next generation of telecom and datacom devices. (2021-02-11)

Silicon chip provides low cost solution to help machines see the world clearly
Researchers in Southampton and San Francisco have developed the first compact 3D LiDAR imaging system that can match and exceed the performance and accuracy of most advanced, mechanical systems currently used. (2021-02-10)

THz spectroscopy tracks electron solvation in photoionized water
''This work provides insights on the fundamental aspects of the charge transport process in water and lays a foundation for further understanding of the physicochemical properties and transient evolution of femtosecond-laser-pulse-excited plasma in water.'' (2021-02-09)

The quantum advantage: a novel demonstration
Scientists have just proved that a quantum machine can perform a given verification task in seconds when the same exercise would take a time equivalent to the age of the universe for a conventional computer. For this demonstration, they combined a complex interactive algorithm that solves a certain type of mathematical problem with limited information and a simple experimental photonics system that can be made in all advanced photonics laboratories. (2021-02-08)

New ink jet approach offers simple way to print microdisk lasers for biosensing
Researchers have developed a unique inkjet printing method for fabricating tiny biocompatible polymer microdisk lasers for biosensing applications. The approach enables production of both the laser and sensor in a room temperature, open-air environment, potentially enabling new uses of biosensing technologies for health monitoring and disease diagnostics. (2021-02-03)

Deep Vision: Near-infrared imaging and machine learning can identify hidden tumors
Gastrointestinal stromal tumors are tumors of the digestive tract that grow underneath the mucus layer covering our organs. Because they are deep inside the tissue, these ''submucosal tumors'' are difficult to detect and diagnose, even with a biopsy. Now, researchers from Japan have developed a novel minimally invasive and accurate method using infrared imaging and machine learning to distinguish between normal tissue and tumor areas. This technique has a strong potential for widespread clinical use. (2021-02-02)

Optimized LIBS technique improves analysis of nuclear reactor materials
In a new study, investigators report an optimized approach to using laser-induced breakdown spectroscopy (LIBS) for analyzing hydrogen isotopes. Their new findings could enable improved rapid identification and measurement of hydrogen and other light isotopes that are important in nuclear reactor materials and other applications. (2021-02-01)

New study investigates photonics for artificial intelligence and neuromorphic computing
Scientists have given a fascinating new insight into the next steps to develop fast, energy-efficient, future computing systems that use light instead of electrons to process and store information - incorporating hardware inspired directly by the functioning of the human brain. (2021-01-29)

Neural network has learned to identify tree species
Skoltech scientists have developed an algorithm that can identify various tree species in satellite images. Commercial forest taxation providers and their end-users, including timber procurers and processors and forest industry entities, can use the new technology for quantitative and qualitative assessment of wood resources in leased areas. Also, this solution enables quick evaluations of underdeveloped forest areas in terms of investment appeal. (2021-01-28)

Lasing mechanism found in water droplets
As reported in Advanced Photonics, Chen's NTU team recently discovered that when a water droplet interacts with a surface to form a contact angle, the interfacial molecular forces determine the geometry of a droplet resonator. Dramatic mechanical changes at the interface play a significant role in the optical oscillation of droplet resonators. (2021-01-28)

Breakthrough for laser-induced breakdown spectroscopy
Researchers under the leadership of Heping Zeng at East China Normal University in Shanghai recently demonstrated a novel technique: plasma-grating-induced breakdown spectroscopy (GIBS). (2021-01-28)

Highly efficient perovskite light-emitting diodes for next-generation display technology
Highly efficient perovskite light-emitting diodes for next-generation display technology. (2021-01-24)

Electrons caught in the act
Tsukuba University scientists create movies of the ultrafast motion of electrons traveling through an organic semiconductor with atomic-level resolution. This work may lead to more powerful and miniaturized smart devices. (2021-01-21)

Adaptive optics with cascading corrective elements
As reported in Advanced Photonics, researchers from the University of Freiburg, Germany, have made a significant advance in AO microscopy through the demonstration of a new AO module comprising two deformable phase plates (DPPs). (2021-01-21)

Is your skin thirsty? Optoacoustic sensor measures water content in living tissue
Researchers from Skoltech and the University of Texas Medical Branch (US) have shown how optoacoustics can be used for monitoring skin water content, a technique which is promising for medical applications such as tissue trauma management and in cosmetology. (2021-01-15)

Dual-shot dynamics and ultimate frequency of all-optical magnetic recording on GdFeCo
Achieving ultrafast and energy-efficient optical control of magnetism beyond light's 'diffraction limit' could revolutionize information-processing technology. Towards this goal, researchers led by Xiangping Li at Jinan University and Alexey V. Kimel at Radboud University have determined the fastest possible rate of the optical reversal of magnetization of up to 3?GHz, and proposed a method to achieve data recording at scales below light's 'diffraction limit', which is generally believed to restrict the attainable resolution. (2021-01-14)

Raman spectroscopy shows promise for diagnosing oral cancer
In a new study, researchers show that a light-based analytical technique known as Raman spectroscopy could aid in early detection of oral squamous cell carcinoma (OSCC). (2021-01-13)

Researchers acquire 3D images with LED room lighting and a smartphone
In The Optical Society (OSA) journal Optics Express, the researchers demonstrate that 3D optical imaging can be performed with a cell phone and LEDs without requiring any complex manual processes to synchronize the camera with the lighting. (2021-01-11)

Long live the efficient, pure-blue OLED
In work that could help to solve the challenge of finding blue light sources matching the performance of red and green ones for displays using organic light-emitting diodes, researchers in Japan have demonstrated devices that produce pure-blue emission with high efficiency, maintain brightness for relatively long times, and lack any expensive metal atoms--a set of properties that has so far been difficult to obtain simultaneously. (2021-01-04)

New phase for synthetic aperture microscopy
Although SAM is undoubtedly a promising approach, current implementations lack in both spatial resolution and frame rate to be useful for emerging applications. To address these issues, a team of researchers led by Renjie Zhou from The Chinese University of Hong Kong recently developed a novel SAM method. (2020-12-21)

New method for imaging exhaled breath could provide insights into COVID-19 transmission
A new method for visualizing breath that is exhaled while someone is speaking or singing could provide important new insights into how diseases such as COVID-19 spread and the effectiveness of face masks. (2020-12-21)

Experiments first verify distributed quantum phase estimation
Professor PAN Jianwei and his colleges from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) have achieved the experimental verification of distribution quantum phase estimation for the first time. This work was published on Nature Photonics. (2020-12-21)

Performance breakthrough by topological-insulator into a waveguide-resonator system
Topological insulator (TI), a major discovery in condensed matter physics since this century, has now been introduced into waveguide-resonator systems. Along with basic similarities with classical ones, a TI enhanced system shows great advantages. A recent research in Nanjing University boosted the confidence of using the concepts of TI for practical device performance and functionalities, with applications being novel signal processing, sensing, lasering, energy harvesting, and intense wave-matter interactions. (2020-12-20)

International research project investigates photosensitive carbon nanoparticles
An international team of researchers, including researchers from FAU headed by Prof. Dr. Dirk M. Guldi have now managed to identify the fundamental problems relating to the photophysics and photochemistry of carbon nanocolloids (CNC), and ascertain possible approaches for research into these readily available, non-toxic and adaptable nanomaterials. (2020-12-14)

High-brightness source of coherent light spanning from the UV to THz
An international team of scientists reports in Nature Photonics on a novel technique for a high-brightness coherent and few-cycle duration source spanning 7 optical octaves from the UV to the THz. (2020-12-14)

Scientists model photoluminescence kinetics in semiconductor nanoplatelets for better optoelectroni
The hunt for materials and systems with better optical properties has always been one of the focal points of semiconductor research. Tailoring the synthesis of photoluminescent nanocrystals for specific applications may require predictions of spectral and relaxation characteristics. Hence, researchers need a detailed understanding and modeling of the underlying kinetics. Scientists presented their simulation and theoretical models and showed that the proposed approach reproduces all the features of experimental curves measured for different nanoplatelet systems. (2020-12-09)

Research develops new theoretical approach to manipulate light
The quest to discover pioneering new ways in which to manipulate how light travels through electromagnetic materials has taken a new, unusual twist. (2020-12-08)

Ionic defect landscape in perovskite solar cells revealed
Joint research work between Chemnitz University of Technology and Technische Universität Dresden under Chemnitz leadership reveals ionic defect landscape in metal halide perovskites -- publication in renowned journal Nature Communications (2020-12-04)

Danish researchers develop budget optical ammonia sensor
In collaboration with the Technical University of Denmark (DTU), the Department of Engineering at Aarhus University has developed photonic sensor technology that can pave the way for a portable, reliable and, above all, inexpensive device for detecting ammonia and other gases in agriculture. The new technology has been developed as part of the Ecometa project, which has received DKK 12.5 million funding from Innovation Fund Denmark. (2020-12-01)

Nonlinear beam cleaning in spatiotemporally mode-locked lasers
Researchers from École Polytechnique Fédérale de Lausanne, Switzerland (EPFL) recently developed a new approach for generating high-energy, ultrashort pulses with single-mode beam quality: nonlinear beam cleaning in a multimode laser cavity. (2020-11-30)

Light confinement in a 3D space
SUTD researchers develop technology which allows for photonic integrated circuits to unlock their potential as high resolution 3D photonic structures in ultra-high speed communications. (2020-11-26)

Strain engineering of 2D semiconductor and graphene
Strain engineering can significantly manipulate the two-dimensional (2D) materials' electronic and optical properties, which endow it the potential applications in optoelectronics and nanophotonics. To summarize recent fascinating work about the strain engineering of 2D materials, scientists in China write a review article that gives people a comprehensive introduction to this field, including the strain field theory, tunable band structure and optical properties of 2D materials under strain field, and their photonic applications. (2020-11-23)

Vibrational encounters - phonon polaritons meet molecules
Researchers from CIC nanoGUNE BRTA (San Sebastian, Spain), in collaboration with the Donostia International Physics Center (San Sebastián, Spain) and the University of Oviedo (Spain) employed a spectroscopic nanoimaging technique to study how infrared nanolight - in form of phonon polaritons - and molecular vibrations interact with each other. (2020-11-23)

From lab to industry? Ideally ordered porous titania films, made at scale
Researchers from Tokyo Metropolitan University have realized high-throughput production of thin, ordered through-hole membranes of titanium dioxide. Titania layers were grown using anodization on mask-etched titanium before being crystallized. Applying a second anodization, they converted part of the layer back to an amorphous state. The amorphous portion was then selectively dissolved to free the film while leaving the template intact. This paves the way for industrial production of ordered titania membranes for photonics. (2020-11-21)

An INRS research team pushes back the boundaries of high-energy laser pulses
Using the Advanced Laser Light Source (ALLS) facility, the research team of Professor François Légaré of the Institut national de la recherche scientifique (INRS) has pushed back the boundaries of high-energy pulse propagation in a nonlinear medium through the observation of high-energy multidimensional solitary states (MDSS). This breakthrough allows the direct generation of extremely short and intense, laser pulses that are highly-stable in time and space. (2020-11-19)

Scientists age quantum dots in a test tube
Researchers from MIPT and the RAS Institute of Problems of Chemical Physics have proposed a simple and convenient way to obtain arbitrarily sized quantum dots required for physical experiments via chemical aging. (2020-11-19)

No losses: Scientists stuff graphene with light
Physicists from MIPT and Vladimir State University, Russia, have achieved a nearly 90% efficiency converting light energy into surface waves on graphene. They relied on a laser-like energy conversion scheme and collective resonances. (2020-11-16)

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