Light technology is at the heart of many cutting-edge innovations, from high-speed internet to advanced medical imaging. However, transmitting light through challenging environments, such as turbulent atmospheres or deformed optical systems, has always posed a significant hurdle. These complexities can distort and disrupt the light field, making it difficult to achieve clear and reliable results. Scientists have long sought ways to overcome these limitations, and a new breakthrough may hold the key to advancing practical applications.
Posted on 13 August 2024 | 8:05 pm
Since the first demonstration of the laser in the 1960s, laser spectroscopy has become an essential tool for studying the detailed structures and dynamics of atoms and molecules. Advances in laser technology have further enhanced its capabilities. There are two main types of laser spectroscopy: frequency comb-based laser spectroscopy and tunable continuous-wave (CW) laser spectroscopy.
Posted on 12 August 2024 | 7:55 pm
Unlike classical encryption, which relies on mathematical algorithms, quantum encryption assures security based on physical principles. Detection of espionage or interference is guaranteed by unavoidable alteration of the quantum states involved.
Posted on 12 August 2024 | 4:51 pm
An automated computational approach to the optical lens design of imaging systems promises to provide optimal solutions without human intervention, slashing the time and cost usually required. The result could be improved cameras for mobile phones with superior quality or new functionality.
Posted on 12 August 2024 | 4:28 pm
Future optical communication and signal processing systems will require high-volume optical links, wherein photonic integrated devices play a key role. Si photonics is currently among the most advanced techniques for realizing low-cost PIC. However, despite their enormous potential, there remain basic restraints on light modulation in SOI waveguides. The absence of a linear EO coefficient is challenging because of the crystal structure of Si.
Posted on 8 August 2024 | 4:22 pm
Technology startup founder SARAH MORGAN opens a series about circadian lighting opportunities with a call for readers to vote on covered project findings.
Posted on 7 August 2024 | 6:17 pm
When it comes to materials for quantum sensors, diamond is the best game in town, says Cornell University professor Gregory Fuchs. Now he and a team of scientists have upped diamond's game by generating exquisite imagery of diamond undergoing microscopic vibrations.
Posted on 7 August 2024 | 5:28 pm
What does the inside of a cell really look like? In the past, standard microscopes were limited in how well they could answer this question. Now, researchers from the Universities of Göttingen and Oxford, in collaboration with the University Medical Center Göttingen (UMG), have succeeded in developing a microscope with resolutions better than five nanometers (five billionths of a meter). This is roughly equivalent to the width of a hair split into 10,000 strands. Their new method was published in Nature Photonics.
Posted on 7 August 2024 | 4:45 pm
Shock experiments are widely used to understand the mechanical and electronic properties of matter under extreme conditions, like planetary impacts by meteorites. However, after the shock occurs, a clear description of the post-shock thermal state and its impacts on material properties is still lacking.
Posted on 7 August 2024 | 2:31 pm
Metalens is a kind of optical metasurface composed of metaatoms for manipulating incoming light's amplitude, phase, and polarization. Unlike traditional refractive lenses, metalens can modulate the wavefront from plane to spherical at an interface. It has garnered widespread attention due to its novel physical properties and promising potential applications.
Posted on 7 August 2024 | 2:10 pm
Soon, data storage centers are expected to consume almost 10% of the world's energy generation. This increase is, among other things, due to intrinsic limitations of the materials used—ferromagnets. Consequently, this problem has ignited a quest for faster and more energy-efficient materials.
Posted on 7 August 2024 | 1:40 pm
In solar cells and light-emitting diodes, maintaining the excited state kinetics of molecules against annihilation is a race against time. These systems need to strike a careful balance between different processes that lead to loss of energy and those that lead to the desired outcome.
Posted on 7 August 2024 | 11:08 am
Skin-like displays are critical components of information output in next-generation portable and wearable electronics. Currently, all such displays are fabricated on glass or thick plastic substrates, limiting the inherent mechanical flexibility of organic materials and preventing intimate skin contact.
Posted on 6 August 2024 | 2:11 pm
The Tata Institute of Fundamental Research, Mumbai has pioneered a method to measure ultrahigh power, ultrashort laser pulses in a comprehensive manner. The paper reporting this has been published in the journal Optica.
Posted on 6 August 2024 | 1:31 pm
EPFL researchers have published a programmable framework that overcomes a key computational bottleneck of optics-based artificial intelligence systems. In a series of image classification experiments, they used scattered light from a low-power laser to perform accurate, scalable computations using a fraction of the energy of electronics.
Posted on 6 August 2024 | 12:13 pm
With the development of artificial intelligence technology, various artificial hardware neural networks such as recursive neural networks, convolutional neural networks, and spiking neural networks have been proposed to meet the efficient processing and recognition of massive data.
Posted on 6 August 2024 | 12:05 pm
LED developers continue to push performance in compact emitters, digging in to refine thermal management and optical designs for a range of use cases.
Posted on 5 August 2024 | 8:03 pm
Full coherent control of wave transport and localization is a long-sought goal in wave physics research, which encompasses many different areas from solid-state to matter-wave physics and photonics. One among the most important and fascinating coherent transport effects is Bloch oscillation (BO), which refers to the periodic oscillatory motion of electrons in solids under a direct current (DC)-driving electric field.
Posted on 5 August 2024 | 6:24 pm
Computer-generated holography (CGH) provides an approach to digitally modulate a given wavefront. This technology, partly inherited from optical holography and partly advanced by the progress of computing technology, has become an emerging focus of academia and industry.
Posted on 5 August 2024 | 3:45 pm
Imagine the possibility of sending messages that are completely impervious to even the most powerful computers. This is the incredible promise of quantum communication, which harnesses the unique properties of light particles known as photons.
Posted on 5 August 2024 | 1:02 pm
In a paper, titled "Partial coherence enhances parallelized photonic computing," published in Nature, researchers from the University of Oxford, along with collaborators from the Universities of Muenster, Heidelberg, and Ghent, report that replacing lasers with less complex light sources can surprisingly boost performance in some optical applications, such as light-driven AI technologies.
Posted on 2 August 2024 | 12:43 pm
An international team of scientists, led by Trinity College Dublin, has devised an innovative imaging method using state-of-the-art microscopes that significantly reduces the time and radiation required. Their work represents a significant breakthrough that will benefit several disciplines, from materials science to medicine, as the method promises to deliver improved imaging for sensitive materials such as biological tissues that are especially vulnerable to damage.
Posted on 1 August 2024 | 6:00 pm
Scientists cannot observe dark matter directly, so to "see" it, they look for signals that it has interacted with other matter by creating a visible photon. However, signals from dark matter are incredibly weak. If scientists can make a particle detector more receptive to these signals, they can increase the likelihood of discovery and decrease the time to get there. One way to do this is to stimulate the emission of photons.
Posted on 1 August 2024 | 12:10 pm
The concept of deep diffractive neural networks (D2NN) was introduced by Professor Ozcan's research team in 2018. D2NN combines the principles of light diffraction with the functionalities of neural networks. It consists of a series of continuous diffractive layers. As light passes through these layers, variations in transmission or reflection coefficients at different positions cause changes in the light's phase and amplitude.
Posted on 1 August 2024 | 12:07 pm
Dr. Asela Abeya, of SUNY Poly faculty in the Department of Mathematics and Physics, has collaborated with peers at the University at Buffalo and Rensselaer Polytechnic Institute on a research paper titled "On Maxwell-Bloch systems with inhomogeneous broadening and one-sided nonzero background," which has been published in Communications in Mathematical Physics.
Posted on 1 August 2024 | 11:34 am
In Light: Science & Applications journal UCLA researchers introduce an innovative design for diffractive deep neural networks (D2NNs). This new architecture, termed Pyramid-D2NN (P-D2NN), achieves unidirectional image magnification and demagnification, significantly reducing the number of diffractive features required.
Posted on 1 August 2024 | 10:36 am
A new optical phenomenon has been demonstrated by an international team of scientists led by physicists at the University of Bath, with significant potential impact on pharmaceutical science, security, forensics, environmental science, art conservation and medicine.
Posted on 31 July 2024 | 4:03 pm
Computers benefit greatly from being connected to the internet, so we might ask: What good is a quantum computer without a quantum internet?
Posted on 31 July 2024 | 10:27 am
Ultraviolet (UV) radiation can break most of the chemical bonds in organic matter, and prolonged exposure to ultraviolet light can cause significant harm to humans and objects. In response, UV-shielding materials have been developed to fulfill various commercial requirements, including UV-shielding windows, food containers, contact lenses, and masks.
Posted on 30 July 2024 | 2:09 pm
Researchers at Purdue University have trapped alkali atoms (cesium) on an integrated photonic circuit, which behaves like a transistor for photons (the smallest energy unit of light) similar to electronic transistors. These trapped atoms demonstrate the potential to build a quantum network based on cold-atom integrated nanophotonic circuits.
Posted on 29 July 2024 | 7:53 pm
A research team led by Dr. Li Yunlong at the Shenzhen Institute of Advanced Technology (SIAT) of the Chinese Academy of Sciences delved into the origins of nonlinear current response in polycrystalline metal halide perovskite X-ray detectors. Their study was published in ACS Applied Materials & Interfaces on July 14.
Posted on 29 July 2024 | 9:33 am
A study from the University of California, Los Angeles, published in Advanced Photonics introduces a cutting-edge approach to 3D Quantitative Phase Imaging (QPI) using a wavelength-multiplexed diffractive optical processor.
Posted on 26 July 2024 | 2:34 pm
ZHAGA CONSORTIUM members summarize how replaceable components prolong the useful life of luminaires and contribute to a circular economy.
Posted on 25 July 2024 | 1:34 pm
Any sustainability initiative must include protection of night skies, says the nonprofit, as it joins forces with LUCI.
Posted on 23 July 2024 | 4:56 pm
A name change is coming at owner SGH to reflect the computing emphasis. SK Telecom invests $200 million for AI development, soon after SGH boss says LED industry will likely consolidate. Is Cree in or out?
Posted on 18 July 2024 | 9:17 pm
DLC program director LIESEL WHITNEY-SCHULTE condenses the core industry initiatives in which the DLC participates to inform standards development and product assessment criteria.
Posted on 17 July 2024 | 12:56 pm
High-bay lighting from Luminis contributes to a unique restaurant aesthetic in Earl Giles Distillery production space.
Posted on 16 July 2024 | 7:53 pm
RAC secured a commitment from the Conservative Party. With Labour now in power, there’s no guarantee the research will continue.
Posted on 15 July 2024 | 6:11 pm
Will owner SGH sell the venerable chip maker? Or is it looking to buy?
Posted on 11 July 2024 | 5:36 pm
Cree LED president JOE CLARK credits manufacturing outsourcing, application-specific advances, and a collaborative R&D facility with bolstering the LED developer through challenges.
Posted on 10 July 2024 | 12:00 pm
The Montreal company partners with Pittsburgh’s Leaficient to enhance the SUN as a Service offering.
Posted on 9 July 2024 | 8:06 pm
So say the authors of a new paper that is bound to stir controversy.
Posted on 5 July 2024 | 4:23 pm
Recycled aluminum, reusability, and night sky protection all factor into a rugged new wall-mounted line.
Posted on 3 July 2024 | 3:49 pm
Not all recycling is created equal. A pilot project involving a sprawling Oslo office park yields promising results.
Posted on 28 June 2024 | 12:00 pm
The LIA and consultancy 42 Partners Limited reveal some “dirty secrets” regarding photometric data and explain how results can be cleaned up to improve software tools and, in turn, design outcomes.
Posted on 27 June 2024 | 2:24 pm
The world’s largest lighting provider will be insisting on eco practices when it negotiates with its vendors.
Posted on 26 June 2024 | 3:23 pm
LEDs Magazine editor-in-chief CARRIE MEADOWS shares with great sadness that former editor Maury Wright has passed, and celebrates his memory.
Posted on 25 June 2024 | 6:13 pm
Posted on 18 June 2024 | 3:05 pm
The LED lighting vendor’s plans for greenhouse gas reduction by 2030 and 2045 are solid, say London’s Science Based Targets Initiative.
Posted on 17 June 2024 | 7:21 pm
Leonardo UK taps Signify for a decade of “LaaS” including end-of-life provisions. Contracts like this might help Signify spin out of the indoor lighting doldrums, especially in Europe.
Posted on 14 June 2024 | 4:14 pm
LEDs Magazine editor CARRIE MEADOWS shares details on a new podcast launching in June 2024.
Posted on 12 June 2024 | 5:43 pm
CRAIG DILOUIE makes sense of custom rebates for commercial lighting projects — when to pursue, what to prepare, and how to capitalize on them.
Posted on 12 June 2024 | 4:05 pm
Indoor grower Clade9 likes the results after installing Fluence fittings in one of five rooms. More to come.
Posted on 10 June 2024 | 3:29 pm
The new Osconiq series is more efficient than the existing Oslon lineup. Each will have its advantages, the company says.
Posted on 7 June 2024 | 7:28 pm
And the state of the night sky is probably worse than measurements indicate, the group notes in its annual assessment.
Posted on 5 June 2024 | 5:14 pm