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Optics & Photonics news
Deep learning improves image reconstruction in optical coherence tomography using less data
Optical coherence tomography (OCT) is a non-invasive imaging method that can provide 3D information of biological samples. The first generation of OCT systems were based on time-domain imaging, using a mechanical scanning ...
Optics & Photonics
41 minutes ago
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Scientists use radiography to understand the evolution of liquid and solid microjets
Lawrence Livermore National Laboratory (LLNL) scientists have experimentally tested the predictions of a 2020 study that computationally investigated the effect of melting on shock driven metal microjets. That earlier work ...
Condensed Matter
2 hours ago
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372
Non-linear effects in coupled optical microcavities
Scientists from the Faculty of Physics of the University of Warsaw have demonstrated exciton-polariton lasing and parametric scattering of exciton-polaritons in a system of coupled optical microcavities. The results have ...
Optics & Photonics
17 hours ago
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A single-molecule laser nanospectroscopy technique with micro-electron volt energy resolution
When molecules are excited, they can give rise to a variety of energy conversion phenomena, such as light emission and photoelectric or photochemical conversion. To unlock new energy conversion functions in organic materials, ...
Machine-learning method to find optimal solutions in extremely large design spaces
Electrical engineers at Duke University have devised a new method for solving difficult design problems with many potential solutions in a large design space using machine learning. Dubbed the "neural-adjoint method," the ...
Optics & Photonics
23 hours ago
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Novel method for fast 3D microscopy
In the past, many discoveries have been made because better, more accurate measurement methods have become available, making it possible to obtain data from previously unexplored phenomena. For example, high-resolution microscopy ...
Optics & Photonics
23 hours ago
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258
Optical innovation could calm the jitters of high-power lasers
The Berkeley Lab Laser Accelerator (BELLA) Center at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has developed and tested an innovative optical system to precisely measure and control the ...
Optics & Photonics
Jul 27, 2021
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Amplified spontaneous emission source in a co-pumping, single-frequency Raman fiber amplifier
Recently, researchers from the Shanghai Institute of Optics and Fine Mechanics (SIOM) of the Chinese Academy of Sciences (CAS) have provided the new idea of co-pumping single-frequency Raman amplifiers. Relevant result was ...
Optics & Photonics
Jul 27, 2021
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Researchers create powerful quantum source with meta-lens array
Researchers for the first time have demonstrated a quantum light source based on a meta-lens array. The approach offers a promising platform for both high-dimensional photon entanglement and the coherent control of multiple ...
Optics & Photonics
Jul 27, 2021
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Promising new technique is bringing the microscopic details of the brain into sharper focus
One of the greatest challenges in science is the study of the brain's anatomy and cellular architecture. A promising new technique, developed by scientists in Italy, the UK and Germany, is now bringing the microscopic details ...
Optics & Photonics
Jul 27, 2021
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389
Now in 3D: Deep learning techniques help visualize X-ray data in three dimensions
Computers have been able to quickly process 2D images for some time. Your cell phone can snap digital photographs and manipulate them in a number of ways. Much more difficult, however, is processing an image in three dimensions, ...
General Physics
Jul 26, 2021
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Dalian Coherent Light Source reveals strong isotope effects in photodissociation of water isotopologue
Recently, a research group led by Prof. Yuan Kaijun and Prof. Yang Xueming from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences revealed strong isotope effects in photodissociation of the ...
Optics & Photonics
Jul 23, 2021
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Cascaded metasurfaces for dynamic control of THz wavefronts
Electromagnetic (EM) waves in the terahertz (THz) regime contribute to important applications in communications, security imaging, and bio- and chemical sensing. Such wide applicability has resulted in significant technological ...
Optics & Photonics
Jul 23, 2021
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Generation and application of the high-Q resonance in all-dielectric metasurfaces
In a new publication from Opto-Electronic Advances, researchers led by Professor Liu Yan from Xidian University, China and Professor Gan Xuetao from Northwestern Polytechnical University, China, consider generation and application ...
Optics & Photonics
Jul 23, 2021
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A new theory to explain the transparency of metallic oxides
The electrons of some metal oxides, due to their large effective mass when coupled with the ionic lattice of the material, cannot follow the electric field of light and allow it to pass through the material. Transparent and ...
Condensed Matter
Jul 23, 2021
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Antimatter from laser pincers
In the depths of space, there are celestial bodies where extreme conditions prevail: Rapidly rotating neutron stars generate super-strong magnetic fields. And black holes, with their enormous gravitational pull, can cause ...
Optics & Photonics
Jul 22, 2021
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An X-ray vision-like camera to rapidly retrieve 3D images
It's not exactly X-ray vision, but it's close. In research published in the journal Optica, University of California, Irvine researchers describe a new type of camera technology that, when aimed at an object, can rapidly ...
Optics & Photonics
Jul 22, 2021
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Nanostructures enable record high-harmonic generation
Cornell researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation, paving the way for new scientific tools for high-resolution imaging and studying physical ...
Optics & Photonics
Jul 21, 2021
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Anomalous quantum transport phenomena observed in fractal photonic lattices
Fractals are complex structures that usually exhibit self-similarity and have a non-integer dimension. The terminology "fractal" was first introduced by the famous mathematician Benoit B. Mandelbrot. He noticed that here ...
Optics & Photonics
Jul 20, 2021
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The realization of curved relativistic mirrors to reflect high-power laser pulses
One of the topics investigated in recent physics studies is strong-field quantum electrodynamics (SF-QED). So far, this area has rarely been explored before, mainly because the experimental observation of SF-QED processes ...
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Chaotic electrons heed 'limit' in strange metals
A caffeine buzz helps bees learn to find specific flowers
A transformative metasurface based on a zerogap embedded template
Piezoelectric microelectromechanical system-based optical metasurfaces
New algorithms give digital images more realistic color
Decoding electron dynamics
Non-stop signal achieved in high-power Erbium-doped mid-infrared lasers
Laser 'comb' systems measure all primary greenhouse gases in the air
Researchers develop wearable sensor to monitor oxygen levels through skin
Study: How a unique family of bacteria hides from the immune system
Exploring blood types of Neanderthal and Denisovan individuals
Common floral bacteria can induce pollen germination
