Two-photon absorption and stimulated emission in poly-crystalline zinc selenide with femtosecond laser excitation
In a new publication from Opto-Electronic Advances, authors from the Laser Engineering Group in the School of Engineering at the University of Liverpool, Liverpool, United Kingdom, discuss two-photon absorption and stimulated emission in poly-crystal.....»»
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......»»
Team demonstrates an ultra-broadband tunable terahertz absorber of graphene and hierarchical plasmonic metamaterials
Perfect absorption arises from the strong interaction of valence electrons with light in a conducting material. Optical metamaterial is an effective approach to exploit the superior photon capture capability. Thus, the perfect absorbers could be achi.....»»
Old crystal, new story for enhancing deep ultraviolet laser performance
In the realm of science and technology, harnessing coherent light sources in the deep ultraviolet (DUV) region holds immense significance across various applications such as lithography, defect inspection, metrology, and spectroscopy. Traditionally,.....»»
Romania center explores world"s most powerful laser
"Ready? Signal sent!" In the control room of a research center in Romania, engineer Antonia Toma activates the world's most powerful laser, which promises revolutionary advances in everything from the health sector to space......»»
Study underscores uncertain costs of iron fertilization
As society grapples with the intensifying consequences of climate change, decision-makers are increasingly looking to carbon dioxide removal as a necessary complement to emission reductions. One of the strategies that has received the most attention.....»»
An on-chip photon-counting reconstructive spectrometer with tailored cascaded detector array
Superconducting nanowire single-photon detectors (SNSPDs) have been widely used in various applications requiring single photon detection thanks to their attractive performances. Since SNSPDs are thin films of serval nanometers in thickness, they are.....»»
NASA"s mission to an ice-covered moon will contain a message between water worlds
NASA's Europa Clipper spacecraft, headed to Jupiter's ice-covered moon Europa in October 2024, will carry a laser-etched message that celebrates humanity's connection to water. The message pays homage to past NASA missions that carried similar messag.....»»
Unlocking visible femtosecond fiber oscillators: An advance in laser science
The emergence of ultrafast laser pulse generation, marking a significant milestone in laser science, has triggered incredible progress across a wide array of disciplines, encompassing industrial applications, energy technologies, life sciences, and b.....»»
Researchers identify new method to boost laser processing resolution
Focusing a tailored laser beam through transparent glass can create a tiny spot inside the material. Researchers at Tohoku University have reported on a way to use this small spot to improve laser material processing, boosting processing resolution......»»
Construction of dual heterogeneous interface between zigzag-like Mo-MXene nanofibers and small CoNi@NC nanoparticles
Two-dimensional transition metal carbides (MXene) possess attractive conductivity and abundant surface functional groups, providing immense potential in the field of electromagnetic wave (EMW) absorption. However, high conductivity and spontaneous ag.....»»
Micro-Lisa: Making a mark with novel nano-scale laser writing
High-power lasers are often used to modify polymer surfaces to make high-tech biomedical products, electronics and data storage components......»»
New study reveals influencers of global biogenic volatile organic compound emission trends over the last 20 years
Biogenic volatile organic compounds (BVOCs) emitted by vegetation are important precursors of ozone and secondary organic aerosols in the atmosphere, affecting air quality, clouds, and climate. However, BVOC emissions remain highly uncertain because.....»»
New EPA rule provides clarity, flexibility for the EV transition, suppliers say
Suppliers praised revisions the EPA made to its vehicle emission standards, saying the new rule provides clarity on where the EV market is headed while giving the industry enough leeway to make the targets feasible......»»
How immersive AI transforms skill development
Organizations are becoming more laser-focused on extracting the value of AI, moving from the experimentation phase toward adoption. While the potential for AI is limitless, AI expertise sadly is not. In this Help Net Security video, David Harris, Pri.....»»
Epson EcoTank Pro ET-5850 review: a nearly flawless inkjet
We tested the Epson EcoTank Pro ET-5850, an all-in-one inkjet tank printer that's fast enough to compete with high-quality color laser printers......»»
New rice variety adapted to suit conditions in Madagascar—improved phosphorus absorption and increased zinc content
A new variety of rice that is adapted to life in low-phosphorus soils, that contains an exceptionally large amount of zinc and that was developed specifically for the conditions in Madagascar where it is grown, has recently been certified in the coun.....»»
High-quality microwave signals generated from tiny photonic chip
In a new Nature study, Columbia Engineering researchers have built a photonic chip that is able to produce high-quality, ultra-low-noise microwave signals using only a single laser. The compact device—a chip so small, it could fit on a sharp pencil.....»»
NASA, industry improve lidars for exploration, science
NASA engineers will test a suite of new laser technologies from an aircraft this summer for Earth science remote sensing. Called "lidar," the instruments could also be used to improve models of the moon's shape and aid the search for Artemis landing.....»»
Using polarization to improve quantum imaging
Quantum imaging is a growing field that takes advantage of the counterintuitive and "spooky" ability of light particles, or photons, to become linked, or entangled, under specialized circumstances. If the state of one photon in the entangled duo gets.....»»
Researchers achieve >99% photoluminescence quantum yield in metal nanoclusters
A research team has achieved near-unity room-temperature photoluminescence quantum yield (PLQY) (>99%) in the near-infrared (NIR) emission of metal nanoclusters in solution. Their work is published in Science......»»