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Optics & Photonics news
Controlling magnetism with polarized light: Non-thermal pathway uses inverse Faraday effect
Intense laser pulses can be used to manipulate or even switch the magnetization orientation of a material on extremely short time scales. Typically, such effects are thermally induced, as the absorbed laser energy heats up ...
Condensed Matter
Jul 5, 2024
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Scientists visualize magnetic fields at atomic scale with holography electron microscope
A research team from Japan, including scientists from Hitachi, Ltd. (TSE 6501, Hitachi), Kyushu University, RIKEN, and HREM Research Inc. (HREM), has achieved a major breakthrough in the observation of magnetic fields at ...
Condensed Matter
Jul 5, 2024
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123
Physicists develop method to detect single-atom defects in semiconductors
One of the challenges of cramming smarter and more powerful electronics into ever-shrinking devices is developing the tools and techniques to analyze the materials that make them up with increasingly intimate precision.
Condensed Matter
Jul 4, 2024
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88
Scientists achieve first intercity quantum key distribution with deterministic single-photon source
Conventional encryption methods rely on complex mathematical algorithms and the limits of current computing power. However, with the rise of quantum computers, these methods are becoming increasingly vulnerable, necessitating ...
Optics & Photonics
Jul 3, 2024
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'Acceleration beats' shine bright light on a novel universal modulation regime in a semiconductor-based laser
Researchers at the Paul-Drude-Institute for Solid State Electronics (PDI) have observed a novel modulation regime characterized by the emergence of previously unseen "acceleration beats" in a modulated semiconductor-based ...
Optics & Photonics
Jul 3, 2024
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105
Making glucose measurement in food easier with deep learning
A collaborative research team has recently developed a new method for measuring glucose using deep learning technology. Their research was published in Laser & Photonics Reviews.
Optics & Photonics
Jul 2, 2024
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62
Dual-laser approach could lower cost of high-resolution 3D printing
Researchers have developed a new two-photon polymerization technique that uses two lasers to 3D print complex high-resolution structures. The advance could make this 3D printing process less expensive, helping it find wider ...
Optics & Photonics
Jul 2, 2024
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112
Physicists' laser experiment excites atom's nucleus, may enable new type of atomic clock
For nearly 50 years, physicists have dreamed of the secrets they could unlock by raising the energy state of an atom's nucleus using a laser. The achievement would allow today's atomic clocks to be replaced with a nuclear ...
Optics & Photonics
Jul 2, 2024
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136
Scientists crack new method for high-capacity, secure quantum communication
Scientists have made a significant breakthrough in creating a new method for transmitting quantum information using particles of light called qudits. These qudits promise a future quantum internet that is both secure and ...
Optics & Photonics
Jul 2, 2024
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Researchers develop low-cost light sheet fluorescence microscope
Three-dimensional (3D) imaging of organs and tissues is vital as it can provide important structural information at the cellular level. 3D imaging enables the accurate visualization of tissues and also helps in the identification ...
Optics & Photonics
Jul 2, 2024
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When ultrashort electron bunch accelerates and drastically stops, it can generate terahertz radiation
The propagation of charged particles in a medium at a speed exceeding the phase speed of light in the medium (this speed also called superluminal) leads to the generation of radiation. The diagram of generated radiation during ...
Optics & Photonics
Jul 1, 2024
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New computational microscopy technique provides more direct route to crisp images
For hundreds of years, the clarity and magnification of microscopes were ultimately limited by the physical properties of their optical lenses. Microscope makers pushed those boundaries by making increasingly complicated ...
Optics & Photonics
Jun 28, 2024
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New method for generating monochromatic light in storage rings
When ultrafast electrons are deflected, they emit light—synchrotron radiation. This is used in so-called storage rings in which magnets force the particles onto a closed path. This light is longitudinally incoherent and ...
Optics & Photonics
Jun 28, 2024
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285
Updating the textbook on polarization in gallium nitride to optimize wide bandgap semiconductors
An updated model reconciles the gap between recent experiments and theory concerning polarization in wurtzite semiconductors—paving the way for the development of smaller, faster and more efficient electronic devices, according ...
Optics & Photonics
Jun 28, 2024
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257
Researchers develop technology to mass produce quantum dot lasers for optical communications
South Korean researchers have successfully developed technology to mass-produce quantum dot lasers, widely used in data centers and quantum communications. This breakthrough paves the way for reducing the production cost ...
Optics & Photonics
Jun 28, 2024
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Coherent beam combining-an alternative scheme for delivering high average power femtosecond laser at 2.0 μm
High-power ultrafast laser with an operation wavelength extending to the 2.0 μm range has been attracting increasing research interest, mostly driven by its applications in various fields such as remote sensing, material ...
Optics & Photonics
Jun 28, 2024
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Time-compression in electron microscopy: Terahertz light controls and characterizes electrons in space and time
Scientists at the University of Konstanz in Germany have advanced ultrafast electron microscopy to unprecedented time resolution. Reporting in Science Advances, the research team presents a method for the all-optical control, ...
Optics & Photonics
Jun 26, 2024
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61
Determining refractive index at relativistic speeds
If you studied advanced physics at high school, there's a good chance that you remember Snell's law, which states how a ray of light bends when it crosses a boundary between two media. According to this law, the ratio of ...
Optics & Photonics
Jun 26, 2024
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World record 402 Tb/s transmission in a standard commercially available optical fiber
An international joint research team led by the Photonic Network Laboratory of Japan's National Institute of Information and Communications Technology (NICT) has demonstrated a record-breaking aggregate optical transmission ...
Optics & Photonics
Jun 26, 2024
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Researchers capture detailed picture of electron acceleration in one shot
Adjusting experimental methods achieved the first "single-shot" diagnosis of electron acceleration through a laser wakefield accelerator along a curved trajectory, according to a recent study led by University of Michigan ...
General Physics
Jun 26, 2024
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New probe reveals water-ice microstructures
Engineers find a way to protect microbes from extreme conditions
AI approach optimizes development of antibody drugs
Generation of intense terahertz waves with a magnetic material
Upgraded advanced photon source sees first X-ray light for science
Ultra-high spectral purity revealed in exciton-polariton laser
Quantum computing trade-off problem addressed by new system
New method enhances X-ray microscopy for detecting tiny defects
A new compact diffractive imager for subwavelength resolution
New catalysts enable greener ester synthesis
Study finds ways to enhance transcription factor activity
