All articles tagged with #lasers
Originally Published 2 months ago — by Earth.com
Scientists have successfully transmitted 800 watts of electricity wirelessly over 5.3 miles using laser technology, demonstrating a scalable and efficient method that could revolutionize power delivery to remote or inaccessible areas, with potential applications in defense, emergency response, and off-grid systems.
Originally Published 3 months ago — by Earth.com
A new NASA-led study using laser measurements confirms that Earth's sea levels have risen about 3.5 inches since 1993, with the rate accelerating due to melting land ice, highlighting the urgent need for climate adaptation and mitigation efforts.
Originally Published 3 months ago — by MPR News
Turkey growers in Minnesota are using infrared laser projectors to deter waterfowl and prevent the spread of bird flu, with early reports suggesting they are effective in protecting flocks and reducing the risk of outbreaks.
Originally Published 3 months ago — by The Cool Down
Scientists at Lawrence Livermore achieved a historic fusion ignition using 192 lasers, and a new startup, Inertia, aims to commercialize this technology by developing more powerful lasers and scalable production methods to create affordable, clean, limitless energy within the next decade.
Originally Published 4 months ago — by South China Morning Post
China's recent military parade showcased advanced AI-powered unmanned vehicles, laser weapons, and hypersonic missiles, highlighting the country's focus on integrating emerging technologies like AI, optics, and information systems into modern warfare to enhance its strategic capabilities and deterrence.
Originally Published 5 months ago — by ScienceAlert
Researchers have discovered that peacock feathers contain nanostructures that function as biological lasers, emitting specific wavelengths of light, which may play a role in their dazzling displays and could inspire advances in laser technology.
Originally Published 1 year ago — by Gizmodo
Scientists have demonstrated that lasers can cast shadows, a phenomenon previously thought impossible, by using a green laser to block a blue laser in a ruby crystal. This discovery, published in Optica, challenges traditional notions of shadows and could impact technologies using lasers, like fiber optics. The experiment raises questions about whether the shadow is cast by the laser itself or the ruby crystal, expanding possibilities for laser control.
Originally Published 1 year ago — by Hackaday
New research demonstrates that a laser beam can cast a shadow under specific conditions using a ruby crystal and certain laser wavelengths. This occurs when a green laser alters the crystal's properties, increasing its absorption of a blue laser beam and creating a shadow effect. This phenomenon could have potential applications in using one laser to control another.
Originally Published 1 year ago — by Futurism
Scientists at Brookhaven National Laboratory have discovered that a narrow green laser beam can cast a shadow when passed through a larger blue laser beam inside a ruby crystal, challenging conventional understanding of light interactions. This phenomenon, attributed to optical nonlinear absorption, could lead to new applications in optical switching and light transmission control. The research, published in Optica, opens up possibilities for further exploration of light-matter interactions using different wavelengths and materials.
Originally Published 1 year ago — by ScienceAlert
Scientists have discovered that lasers can create shadows by using nonlinear materials, such as ruby, to block light. When two laser beams intersect in a specific way, the primary beam is obstructed by the secondary, casting a shadow. This finding challenges traditional notions of shadows and light interactions, and could have applications in optical switching and light transmission technologies. The research is set to be published in Optica.
Originally Published 1 year ago — by BBC.com
New laser technology is being developed to help border security distinguish between illegal elephant ivory and legal mammoth tusks, addressing a significant challenge in enforcing the ban on modern ivory trade.
Originally Published 1 year ago — by Livescience.com
Lasers, which stand for "light amplification by sustained emission of radiation," work by making energetic particles vibrate in sync, emitting light waves with aligned peaks and troughs. First proposed by Albert Einstein in 1917, lasers have since become integral to modern technology, from eye surgery to internet connections. With potential applications in exoplanet imaging and data center miniaturization, the future of laser technology looks promising and limitless.
Originally Published 1 year ago — by Livescience.com
New research suggests that under certain conditions, gravitational waves unleashed by black holes could combine with the effects of stimulated emission of radiation to form rare and exotic "gravitational lasers," providing a potential new way to detect dark matter. These gravitational lasers, if they exist, would be a new kind of gravitational wave signal and could serve as evidence for the existence of dark matter in the form of axions. While they would be very rare and mostly point away from Earth, next-generation gravitational wave observatories might be able to detect them, offering a glimpse into the fascinating and mysterious nature of our universe.
Originally Published 1 year ago — by Hackaday
Markus Bindhammer has created a unique flip-flop using photochromic molecular switch, lasers, and chemicals, demonstrating the reversible color-changing property of photochromism. The setup involves two laser modules, an Arduino, and a glass cuvette filled with a photochromic chemical mixed with clear epoxy resin. The spot changes color when exposed to UV light and can be reverted back with a red laser or heat. This innovative use of chemistry and optics showcases the potential for creating optical logic components.
Originally Published 2 years ago — by Phys.org
Researchers have successfully 3D printed micro-optics onto optical fibers, creating a stable hybrid laser that combines the advantages of fiber-based and crystal-based solid-state lasers. The 3D-printed lenses exhibited high damage threshold and stability, allowing the laser to operate at output powers of over 20 mW. This breakthrough enables the development of inexpensive, compact, and stable laser sources that have potential applications in lidar systems for autonomous vehicles, lithography, laser marking, and medical procedures such as precise tissue destruction. The researchers are now working on optimizing the efficiency of the printed optics and exploring different crystals for customized laser outputs.