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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117
Engineering
Energy and resource efficiency are gaining ever more significance, which is why the Fraunhofer Institute for Material and Beam Technology IWS has worked with its partners to develop an alternative for conventional steel construction ...
Mar 16, 2022
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9
Automotive
Researchers at Duke University have demonstrated the first attack strategy that can fool industry-standard autonomous vehicle sensors into believing nearby objects are closer (or further) than they appear without being detected.
Mar 14, 2022
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98
Telecom
ESA's Izaña-1 laser ranging station in Tenerife, Spain, has recently undergone months of testing and commissioning, passing its final tests with flying colors. As it reached "station acceptance," it was handed over to ESA ...
Feb 16, 2022
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3
Electronics & Semiconductors
EPFL spin-off nu glass has successfully tested a portable system that makes the window panes on railcars permeable to mobile communications. This can bring significant environmental and cost benefits to railway companies ...
Feb 7, 2022
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7
Fiber lasers are having a profound impact on manufacturing. The Future Photonics Hub at the University of Southampton is developing new technologies that will be used in the digital manufacturing era. The unique properties ...
Dec 17, 2021
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5
Hi Tech & Innovation
An advanced approach to fix wear damaged rails in remote locations using a repair technology has been shown to be viable for large-scale use using neutron scattering experiments.
Nov 30, 2021
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5
Telecom
NASA's Laser Communications Relay Demonstration (LCRD) is gearing up for launch this fall, no earlier than Nov. 22. The payload arrived in Florida in May, fully integrated into its host spacecraft and ready for its final ...
Oct 19, 2021
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6
Engineering
Metal processing with lasers and plasma releases many different pollutants into the ambient air. The Fraunhofer Institute for Material and Beam Technology IWS, together with partners, has developed a filter system that efficiently ...
Oct 1, 2021
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24
Engineering
Researchers at Harvard University and China University of Petroleum recently developed dynamic speckle holography (DSH), a new technique to measure three-dimensional (3D) maps of displacements that combines imaging and scattering ...
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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