Engineering
Sandblasting—that was yesterday. Laser beams can now clean and structure surfaces more precisely and cost-effectively and in more environmentally friendly ways than conventional systems. The Fraunhofer Institute for Material ...
Sep 21, 2022
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Engineering
Lasers have become a major part of our day-to-day lives.
Sep 12, 2022
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385
Engineering
An example of hybrid technology in its purest form has been developed and built by the Fraunhofer ILT for the DVS research project KoaxHybrid. In Aachen, the institute engineers have developed a new optical system with glass ...
Aug 30, 2022
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Engineering
Whether in photosynthesis or in a photovoltaic system: If you want to use light efficiently, you have to absorb it as completely as possible. However, this is difficult if the absorption is to take place in a thin layer of ...
Aug 29, 2022
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Energy & Green Tech
A do-it-yourself device that started life as a hobby and took off during COVID-19 could help to unlock the next generation of solar energy, including advanced technology for space missions.
Aug 24, 2022
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99
Engineering
Powder-based laser beam melting (LPPF) is probably the best-known AM process and has great potential for industrial applications. But how can the limited range of materials for this process be circumvented and the market ...
Jul 25, 2022
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Engineering
NIMS and Osaka University Graduate School of Engineering have succeeded in fabricating a nickel single crystal with only a very few crystalline defects by irradiating nickel powder with a large-radius, flat-top laser beam ...
Jul 12, 2022
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Software
Vibrations during 3D printing either slow down the process or warp the parts, but new software could enable manufacturers to keep up the speed without sacrificing accuracy.
May 17, 2022
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Energy & Green Tech
Until now, wastewater treatment plants have not been able to sufficiently filter out tiny microplastics in wastewater, but this could soon change: The first laser-drilled microplastic filter is being tested in a wastewater ...
Apr 1, 2022
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Engineering
Even though robots don't have eyes with retinas, the key to helping them see and interact with the world more naturally and safely may rest in optical coherence tomography (OCT) machines commonly found in the offices of ophthalmologists.
Mar 29, 2022
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A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
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