laser
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Physics
Laser Plasma Accelerators achieve 100 electron fluxes per second
Laser energy is increased by transferring the energy of the green pump laser pulse to the caldera laser pulse. Credit: Desy, Juan B. Gonzalez Amplifier of the Kaldera Laser System: Laser energy is increased by transferring the energy of a green pump laser pulse to the caldera laser pulse. Credit: Desy/Juan B. Gonzalez Laser plasma accelerators can accelerate particles in…
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Chemistry
Understanding explosion precursors: Investigating high-pressure defragmentation by laser ignition experiments
Highly explosive LLM-105 before and after laser-initiated burns inside diamond anvil cells. The sample mass is ~1 microgram. The product is opaque at low pressure and transparent at higher pressure (lower right panel). Note the increase and decrease in pressure, respectively. Credits: Burning and Fire (2025). doi:10.1016/j.combustflame.2025.114067 Suddenly there is a fierce flash of light and heat, followed by a…
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Nanotechnology
The Deep Ultravi Laser microscope reveals diamond’s nanoscale transport behavior
Dissemination optical creates two DUV beams. It uses a 4F imaging system to interfere with the sample surface (diamond) to generate a microscopic sine -stringed profile. Credit: Stephen Barouss/Mulnane and Caputein Group Ultra Wade band gaps such as diamonds are promising for next -generation electronic devices, higher voltage, and higher frequencies, and operates at higher frequencies because of the large…
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Physics
Deformable mirror technology takes laser welding and 3D printing to new heights
Illustration of adaptive beam shaping using deformable mirror technology. Credit: Yongcui Mi, https://www.diva-portal.org/smash/get/diva2:1909616/FULLTEXT03.pdf Yongcui Mi has developed a new technology that enables real-time shaping and control of laser beams for laser welding and directed energy deposition using lasers and wires. This innovation is based on the same mirror technology used in advanced telescopes for astronomy. Within a few years, this…
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Physics
From traditional to technical: using laser Doppler vibrometry to preserve frescoes
U.S. Capitol fresco detection color map. Lighter colors indicate greater vibrations in the plaster and therefore delamination. Credit: Nick Ganemi Fresco is an ancient technique in which dry pigments are applied to wet plaster to create stunning works of art that can be preserved for centuries. However, over time, these masterpieces often face deterioration due to delamination, where the decorative…
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Physics
Ytterbium thin disk laser paves the way for sensitive detection of air pollutants
Optical parametric oscillator pump with ytterbium thin plate laser. Credit: APL Photonics (2024). DOI: 10.1063/5.0230388 Along with carbon dioxide, methane is the main cause of global warming. To accurately detect and monitor climate pollutants in the atmosphere, scientists at the Max Planck Institute for the Science of Light (MPL) have developed advanced laser technology. A high-power ytterbium thin disk laser…
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Physics
Laser vibration sensing technology can detect landmines faster than traditional techniques
Researchers at the National Center for Physical Acoustics are developing a faster and more efficient way to detect buried objects such as landmines using laser arrays and vibrating machines. In this image, objects buried in the soil appear as red blobs. NCPA Chief Scientist Vyacheslav Aranchyk (right) recently introduced the technology at a conference in Japan. Credit: Kevin Bain/Ole Miss…
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Science
Researchers develop a laser that produces the most powerful ultrashort laser pulses ever
Overall system overview: A laser appears in the center of the image, and in the foreground are lenses and mirrors that reflect and redirect the laser beam. Credit: Moritz Seidel / ETH Zurich The word laser usually conjures up images of a continuous, intensely focused beam of light. Lasers that produce such light are actually quite common and useful. However,…
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Physics
Direct generation of spin current using ultrashort laser pulses
Experimental schematic and static characteristics. Source: Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.133.106902 An international team of physicists has discovered that they can directly generate spin current using a specific type of ultrashort laser pulse. In a study published in the journal Physical Review Letters, the team generated the spin current using linearly polarized laser pulses and a circularly polarized probe…
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