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Photonics and LED Lighting News

Designing a cost-effective X-ray free electron lasers facility

Many advances in structural science since the 1970s were made by probing materials with synchrotron radiation: that is, high energy X-rays generated through accelerating high-energy electrons. The latest generation of such sources, X-ray free electron lasers (XFEL), are far more powerful than their predecessors but are only accessible to international consortia and a few rich countries because of their high cost.

Posted on 12 April 2024 | 5:39 pm

A compact metasurface array-based system for single-shot spectroscopic ellipsometry measurement

Spectroscopic ellipsometry is widely adopted in semiconductor processing, such as in the manufacturing of integrated circuits, flat display panels, and solar cells. However, a conventional spectroscopic ellipsometer, as shown in Fig.1a, typically modulates the polarization state via mechanical rotation of the compensator or analyzer. For spectral detection, it either requires wavelength scanning or the use of a multi-channel spectrometer. The resulting system is often bulky, complex, and require multiple measurements.

Posted on 11 April 2024 | 7:51 pm

Efficiency boost: Dual light pulses minimize energy for phase transitions

Researchers have explained the mechanisms behind a counterintuitive phenomenon: Making a phase transition effective requires less energy if it is initiated by two pulses of light instead of just one. The energy needed to complete the phase transition has been reduced by 6% and could be further optimized. These results have the potential to be transferred to other materials, offering new avenues for precise material control and technological innovation.

Posted on 11 April 2024 | 4:58 pm

New technological advance for fast and efficient 3D imaging of objects

A team of experts from the University of Barcelona and the company Sensofar Tech have designed an innovative technology to obtain three-dimensional images of a study sample quickly, accurately and non-invasively. The work has been published in Nature Communications.

Posted on 11 April 2024 | 3:32 pm

Team reports on ultrafast laser state active controlling based on anisotropic quasi-1D material

Tunable ultrafast lasers with adjustable parameters, such as wavelength, intensity, pulse width and laser states are desirable as next-generation intelligent light sources. Due to complex nonlinear effects within the ultrafast system, it is challenging for laser state active controlling (LSAC) in ultrafast fiber lasers, especially for passive mode-locking, in a convenient and controllable manner.

Posted on 10 April 2024 | 9:00 pm

Novel UV broadband spectrometer improves air pollutant analysis

Sunlight has a major influence on chemical processes. Its high-energy UV radiation in particular is strongly absorbed by all materials and triggers photochemical reactions of the substances present in the air. A well-known example is the formation of ground-level ozone when UV light hits nitrogen oxides.

Posted on 10 April 2024 | 2:14 pm

Electro-optic 3D snapshot of a laser wakefield accelerated kilo-ampere electron bunch

Invented by T. Tajima and J. Dawson, laser wakefield acceleration (LWFA) harnesses the power of high-intensity laser pulses to drive plasma waves with acceleration gradients orders of magnitude higher than conventional RF-based accelerators.

Posted on 9 April 2024 | 8:40 pm

Research team exerts electrical control over polaritons, hybridized light-matter particles, at room temperature

A research team has pioneered an innovative technique in ultra-high-resolution spectroscopy. Their breakthrough marks the world's first instance of electrically controlling polaritons—hybridized light-matter particles—at room temperature. The research has been published in Physical Review Letters.

Posted on 9 April 2024 | 1:37 pm

Advancing real-time 3D holographic display: A new method for computer-generated holography

Holographic displays offer a promising avenue for achieving lifelike 3D reproductions with continuous depth sensation, holding potential applications in fields such as entertainment, medical imaging, and virtual reality. However, the conventional methods for generating computer-generated holograms (CGHs) rely on repetitive computations, leading to increased computational complexity and impracticality for real-time applications.

Posted on 8 April 2024 | 9:29 pm

Microprinting millions of microparticles in the blink of an eye through multi-photon 3D laser printing

Multi-photon 3D laser printing has revolutionized miniature fabrication, but limitations in speed and material compatibility have held it back. Now, researchers have taken a giant leap forward, achieving a tenfold increase in print speed while maintaining exquisite detail.

Posted on 8 April 2024 | 9:06 pm

High-performance terahertz modulators induced by substrate field in Te-based all-2D heterojunctions

High-performance active terahertz (THz) modulators are of great importance for next generation communication technology. However, they currently suffer from the tradeoff between modulation depth and speed.

Posted on 8 April 2024 | 7:37 pm

Atom interferometer charters Navy's inertial navigation path to reduce drift

U.S. Naval Research Laboratory (NRL) researchers have developed a patent-pending Continuous 3D-Cooled Atom Beam Interferometer derived from a patented cold and continuous beam of atoms to explore atom-interferometry-based inertial measurement systems as a path to reduce drift in Naval navigation systems.

Posted on 8 April 2024 | 4:58 pm

Propagating dimensions of light: Deforming versatile non-diffractive beams along the optical trajectory

The diffraction of light is a ubiquitous phenomenon in nature where waves spread out as they propagate. This spreading of light beams during propagation limits the efficient transmission of energy and information. Therefore, scientists have endeavored to suppress diffraction effects to better maintain the shape and direction of light beams.

Posted on 8 April 2024 | 3:03 pm

Innovative sensing platform unlocks ultrahigh sensitivity in conventional sensors

Optical sensors serve as the backbone of numerous scientific and technological endeavors, from detecting gravitational waves to imaging biological tissues for medical diagnostics. These sensors use light to detect changes in the properties of the environment they're monitoring, including chemical biomarkers and physical properties like temperature. A persistent challenge in optical sensing has been enhancing sensitivity to detect faint signals amid noise.

Posted on 6 April 2024 | 10:52 am

Signify enhances Hue-to-TV features with Samsung

The company’s efforts to reverse the home smart lighting decline has yet to include price cuts, which some analysts believe are necessary.

Posted on 5 April 2024 | 8:56 pm

Kerr-enhanced optical spring for next-generation gravitational wave detectors

The detection of gravitational waves stands as one of the most significant achievements in modern physics. In 2017, gravitational waves from the merger of a binary neutron star were detected for the first time which uncovered crucial information about our universe, from the origin of short gamma-ray bursts to the formation of heavy elements.

Posted on 5 April 2024 | 5:50 pm

Team develops portable swept-source Raman spectrometer for chemical and biomedical applications

In 1928, Indian physicist Sir C. V. Raman and his colleague K. S. Krishnan discovered that when light interacts with matter, parts of the scattered light undergo changes in energy due to interaction with molecular vibrations, resulting in what is known as Raman scattering. The discovery laid the foundation for Raman spectroscopy, a technique that takes advantage of these energy changes to create a unique fingerprint of the molecular structure of the material.

Posted on 4 April 2024 | 9:12 pm

Team presents new path to long-term data storage based on atomic-scale defects

With the development of the internet, social media and cloud computing, the amount of data created worldwide on a daily basis is sky-rocketing. This calls for new technologies that could provide higher storage densities combined with secure long-term data archiving far beyond the capabilities of traditional data storage devices.

Posted on 4 April 2024 | 3:00 pm

Surface emitting semiconductor laser achieves efficiency breakthrough

Since its inception, the power conversion efficiency (PCE) of edge-emitting laser (EEL) technology has been continuously breaking records, achieving a historically high efficiency of 85% at -50°C in 2006. Following this, in 2007, EEL also reached a high efficiency of 76% at room temperature. However, over the next 15 years, no new efficiency records were set and these achievements have remained the pinnacle for semiconductor lasers.

Posted on 4 April 2024 | 3:00 pm

NASA taking LED horticulture to the moon

Lunar crops will include thale cress, possibly mizuna greens, and other tasty treats for astronauts to eat and for earthlings to study.

Posted on 3 April 2024 | 7:15 pm

Light Bites: What’s happening in executive appointments — April 3, 2024

LEDs Magazine checks out the latest moves in the lighting industry’s executive suites.

Posted on 3 April 2024 | 4:37 pm

Reimagining quantum dot single-photon sources: A breakthrough in monolithic Fabry-Perot microcavities

Self-assembled semiconductor quantum dots (QDs) represent a three-dimensional confined nanostructure with discrete energy levels, which are similar to atoms. They are capable of producing highly efficient and indistinguishable single photons on demand and are important for exploring fundamental quantum physics and various applications in quantum information technologies. Leveraging traditional semiconductor processes, this material system also offers a natural integration-compatible and scalable platform.

Posted on 3 April 2024 | 3:09 pm

Intelligent liquid: Researchers develop metafluid with programmable response

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a programmable metafluid with tunable springiness, optical properties, viscosity and even the ability to transition between a Newtonian and non-Newtonian fluid.

Posted on 3 April 2024 | 3:00 pm

Researchers visualize quantum effects in electron waves

One of the most fundamental interactions in physics is that of electrons and light. In an experiment at Goethe University Frankfurt, scientists have now managed to observe what is known as the Kapitza-Dirac effect for the first time in full temporal resolution. This effect was first postulated more than 90 years ago, but only now are its finest details coming to light.

Posted on 3 April 2024 | 2:41 pm

Focusing ultra-intense lasers to a single wavelength

Ultra-intense ultrashort lasers are powerful tools used in various fields like physics, national security, industry, and health care. They help researchers delve into strong-field laser physics, laser-driven radiation sources, particle acceleration, and more.

Posted on 2 April 2024 | 7:40 pm

Classical optical neural network exhibits 'quantum speedup'

In recent years, artificial intelligence technologies, especially machine learning algorithms, have made great strides. These technologies have enabled unprecedented efficiency in tasks such as image recognition, natural language generation and processing, and object detection, but such outstanding functionality requires substantial computational power as a foundation.

Posted on 2 April 2024 | 7:07 pm

Using one single image to realize on-orbit calibration of space camera lens distortion

In various space tasks such as space rendezvous-docking and on-orbit maintenance, the measurement of the relative posture and position of non-cooperative spacecraft is a key component. However, the commonly used global positioning system, radar detection systems and laser scanners are not suitable for certain special space tasks as they are large, heavy, complex and expensive.

Posted on 2 April 2024 | 6:13 pm

A single photon emitter deterministically coupled to a topological corner state

Exploring cavity quantum electrodynamics (cQED) is pivotal for advancing quantum technology and unraveling the fundamental intricacies of light-matter interactions. A prevalent strategy involves integrating a single quantum emitter into photonic microcavities boasting high-quality (Q) factors or small mode volumes. The strength of the coupling in cQED is often assessed using the Purcell factor, a vital parameter.

Posted on 2 April 2024 | 6:07 pm

Researchers use smartphone screen to create 3D layered holographic images

Researchers have developed a 3D full-color display method that uses a smartphone screen rather than a laser to create holographic images. With further development, the new approach could be useful for augmented or virtual reality displays.

Posted on 2 April 2024 | 4:51 pm

Revolutionizing spectrometry with ultra-simplicity: Disrupting conventional designs through novel diffraction computing

Spectrometers are crucial scientific instruments in various research fields and have consistently served as indispensable tools for foundational research. However, the unwieldy size of conventional spectrometers poses challenges for cost-effective and compact mobile platforms.

Posted on 1 April 2024 | 8:36 pm

A novel liquid crystal-based tunable dielectric metasurface

Dielectric metasurfaces represent one of the cutting-edge research and application directions in optics. They not only possess the advantage of low loss but also enable the realization of device thicknesses at subwavelength scales. Moreover, they can freely modulate light in multiple dimensions, such as amplitude, phase, and polarization.

Posted on 1 April 2024 | 8:28 pm

Team creates cooperative exciton-polariton condensate

Superfluorescence (SF), as a cooperative radiation effect originating from vacuum quantum fluctuations, is an ideal platform for studying many-body correlation mechanisms in an exciton ensemble, and for developing optically ultrafast techniques on bright quantum light sources. Recently, the observations of superfluorescence effects based on different radiative materials or under different working temperatures have been a hot topic. However, current works mainly focus on studying and discussing the establishment of SF itself.

Posted on 1 April 2024 | 7:57 pm

Research team realizes magnonic frequency comb

The optical frequency comb, a spectrum of optical radiation composed of evenly spaced and phase-coherent narrow spectral lines, was initially developed for precise time and frequency measurements. Over the past two decades, it has shown broad application prospects in fields such as astronomy, cosmology, optical atomic clocks and quantum key distribution. However, the implementation of magnonic frequency combs for high-precision magnonic frequency measurements remains a challenge.

Posted on 1 April 2024 | 7:57 pm

Top 11 Romantic Restaurants in 2024

When it comes to organizing a romantic night out, selecting the ideal romantic restaurant is critical. Whether you want a quality dining experience or a fine atmosphere, there are several romantic restaurants to select from. From tiny French-inspired diners to breathtaking rooftop restaurants, these are some of the most romantic restaurants where you can dine […]

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Posted on 1 April 2024 | 4:28 pm

Has the horticultural lighting drought run its course?

A flurry of announcements from Sollum and Signify suggests that growers are once again buying LED illumination for greenhouses and vertical farms.

Posted on 29 March 2024 | 3:02 pm

LEDucation notebook: Scenes and thoughts from the show

Overall, exhibits at LEDucation demonstrated the lighting community’s commitment to performance improvements, reliability, flexibility, and greater strides toward sustainability.

Posted on 27 March 2024 | 7:51 pm

LAST WORD | DesignLights Consortium celebrates advances, looks ahead to achieving climate pledge targets

DLC executive TINA HALFPENNY summarizes historic gains in energy efficiency while revealing the consortium’s forward-looking initiatives and objectives.

Posted on 27 March 2024 | 12:25 pm

EMERGING TECHNOLOGY | Leveraging LED and 3D printing technology for a sustainable SSL paradigm – Part II

DON PEIFER explores how additive manufacturing can shape an equitable circular lighting future by delivering modularity, customization, design for disassembly, and cost-effective designs.

Posted on 27 March 2024 | 12:20 pm

PROJECTS | Updated lighting makes the grade across educational institutions

A public university and a small private school demonstrate that lighting upgrades at any scale can reduce energy consumption while improving aesthetics, writes JENNY JONES.

Posted on 27 March 2024 | 12:20 pm

ECONOMY | Trends in lighting rebates for 2024

CRAIG DILOUIE reveals that lighting rebate prospects remain strong, and alongside controls offers, incentivize greater commercial adoption — and installation upgrades — through 2024, according to fulfillment firm BriteSwitch.

Posted on 27 March 2024 | 12:15 pm

PRODUCT SPOTLIGHT | Entertainment Lighting & Controls

LEDs Magazine rounds up some of the latest entertainment lighting, accessories, and controls for creating exciting experiences.

Posted on 27 March 2024 | 12:10 pm

PROFILES IN LIGHTING | Light and Health Research Center (UPDATED)

The Light and Health Research Center continues to seek ways to advance the wellbeing of people and the planet through the science of light.

Posted on 27 March 2024 | 12:05 pm

INDUSTRY INSIGHTS | Shedding light on data center needs

Don’t underestimate the savings and operational enhancements LED lighting can bring to digital infrastructure, says SAM RABINOWITZ, despite the massive power consumption that such facilities demand.

Posted on 27 March 2024 | 12:00 pm

COMMENTARY | Back to our roots

CARRIE MEADOWS reveals what's next for LEDs Magazine in the changing landscape of B2B media.

Posted on 27 March 2024 | 11:55 am

What are you doing for International Dark Sky Week?

It’s coming right up. The group DarkSky has a few ideas on how to celebrate.

Posted on 25 March 2024 | 6:51 pm

Signify wonders whether chrysanthemums would do well under red light only

So it has launched a single-color trial as part of a look at other recipes as well.

Posted on 22 March 2024 | 3:29 pm

LightSPEC West delivers timely education sessions

CEU programming, product demonstrations, and networking opportunities abound during the two-day event centered on architectural lighting in the built environment.

Posted on 20 March 2024 | 12:47 am

Glamox racks up four more offshore wind farm wins

It will illuminate the work platforms in what should be the largest operation off the U.S. coast, as well as two in the Taiwan Strait and one in South Korea.

Posted on 20 March 2024 | 12:31 am

Report: ams Osram will halt micro LEDs in Malaysia, continue in Germany

With its huge write-down prompted by the loss of Apple’s smartwatch, ams Osram will not completely exit the business, but will find markets where OLEDs won’t compete, says Yole Group.

Posted on 13 March 2024 | 6:35 pm

Light Bites: What’s happening in associations and programs — March 13, 2024

LEDs Magazine rounds up the latest announcements from LED and lighting industry professional associations, recognition programs, and more.

Posted on 13 March 2024 | 3:53 pm

New Space Station crew looking at yet more LED-based horticulture

Ultraviolet and algae are under investigation in Japanese and European chambers aboard the orbiting science lab.

Posted on 11 March 2024 | 8:41 pm

LEDs deter turtle snags on fishing nets

Flashing green lights brought down the “bycatch” rate by 42% in a Cypriot trial, preventing deaths.

Posted on 7 March 2024 | 2:49 pm

Casambi announces wired DALI controller during Light + Building

The smart lighting controls provider expands its ecosystem with a wired controller developed to enable hybrid connectivity in lighting systems.

Posted on 6 March 2024 | 5:43 pm

LightSPEC West spotlights independent agents

The second edition of LightSPEC West brings a unique opportunity for lighting and design professionals to engage with different players in the market.

Posted on 4 March 2024 | 6:56 pm

Jeinz Macias: Biography, Girlfriend, Family, Wikipedia

Jeinz Macias is a name that has recently gained popularity in the music business, mainly in Latin America. Jeinz has won the hearts of many fans with his special combination of classic and contemporary sounds, and he is quickly rising to prominence in the music world. But it is Jeinz’s humility, not just his talent, […]

The post Jeinz Macias: Biography, Girlfriend, Family, Wikipedia appeared first on TechVibe.

Posted on 4 March 2024 | 6:52 pm

The latest eco luminaires feature wool, linen and even water jugs

Lighting vendors are embracing the green ethos.

Posted on 4 March 2024 | 6:16 pm

Ams Osram readies a massive write-down for micro LEDs - UPDATED

The amount could approach $1 billion. After long and costly expenditures in Kulim, Malaysia, enough is enough as the company loses its strategic customer, believed to be Apple.

Posted on 1 March 2024 | 6:49 pm

Unblocked Games WTF: Play games at school or work

Are you weary of being unable to play your favorite games at school or work? Look no farther than unblocked games wtf. In this post, we’ll go over everything you need to know about unblocked games wtf, including what they are, how they operate, and which games to play. Prepare to play insane unblocked games […]

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Posted on 28 February 2024 | 4:54 pm

HBO MaX TVsignin Code: How to hbomax/tvsignin

HBO MaX TVsignin Code: How to hbomax/tvsignin: Are you prepared to begin streaming your favorite HBO series and movies on HBO Max? You’ll need to activate your account by entering your HBO Max Tvsignin code before you can delve into the limitless entertainment selections. In this post, we’ll guide you through the steps of entering […]

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Posted on 28 February 2024 | 2:08 pm

The mobile way to send a fax

Nowadays, it’s really easy to sign a PDF on your phone or any device and send it through email. However, not everyone is okay with getting documents this way – sometimes, you may need to send them via fax. But did you know? You can’t turn your smartphone into a fax machine. Instead, you’ll have […]

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Posted on 26 February 2024 | 6:02 pm

Everything you need to know about Double VPN

Navigating the quest for privacy, premier Virtual Private Networks (VPNs) offer robust protection. They serve to obscure your online tracks, shield you from the myriad hazards lurking in the digital realm, and empower you to overcome web restrictions. Yet, there are instances when a higher level of security is imperative. During such times, the utility […]

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Posted on 26 February 2024 | 4:47 pm

7 Tips For Increasing Viewer Engagement During Live Streams

Many people (82% of them) would rather watch live movies than read other posts on social media. But a lot of people who watch live streams leave because they get bored quickly and find no interest due to poor streaming strategies. These are seven effective tips to get people to watch your live show. From […]

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Posted on 20 February 2024 | 7:57 pm

IGanony: View Instagram Stories Anonymously

IGanony is a wonderful tool for sending Instagram Stories anonymously to viewers or downloading public content without upsetting the owners. It is the best alternative app. It is really quick and simple to use for everyone. What is IGanony, and why do we use it? IGanony is a web-based service that enables users to view […]

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Posted on 19 February 2024 | 3:47 pm