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Laser

— Science

The amazing technicolor liquid nanolaser

By - April 29, 2015 1 Picture
A new nanoscale plasmon laser developed at Northwestern University changes color in real time through a process as simple as swapping one liquid dye for another. The scientists responsible for the technology claim this is the world's first liquid nanoscale laser, and it could find uses in medical diagnostics as well as military or security applications. Read More
— Space

Lasers could be used to zap orbital debris

By - April 17, 2015 1 Picture
Orbital debris is increasingly becoming a hazard to satellites and other spacecraft, which is why various groups have proposed concepts such as gas clouds, nets and sails for collecting it. While those approaches could capture larger objects, the problem of smaller pieces of debris – which whiz around the Earth like bullets – would remain. That's why an international group of scientists is developing a system that could shoot those bits down with a laser. Read More
— Science

World’s most powerful laser diode arrays deployed

By - March 15, 2015 2 Pictures
The High-Repetition-Rate Advanced Petawatt Laser System (HAPLS) under construction in the Czech Republic is designed to generate a peak power of more than 1 quadrillion watts (1 petawatt, 1015 watts). The key component to this instrument – the laser "pump" – will be a set of solid-state laser diode arrays recently constructed by Lawrence Livermore National Laboratory (LLNL). At peak power, this electronic assemblage develops a staggering 3.2 million watts of power and are the most powerful laser diode arrays ever built. Read More
— Bicycles

Erembald bike is laser-cut from stainless steel

By - March 12, 2015 6 Pictures
The 2015 North American Handmade Bicycle Show may have just wrapped up, but that doesn't mean we're no longer hearing about interesting small-batch bikes. Belgian industrial designer Tobias Knockaert recently told us about his stainless steel Erembald bike, that he's producing along with partner Karel Vincke. In order to keep prices down, its frame is cut by lasers and put together like a puzzle. Read More
— Science

Cesium atoms get a shake-up to create excitation in superfluid

By - February 24, 2015 1 Picture
Helium-4 superfluid is a fascinating substance. With properties that seemingly defy normal physics, it leaks straight through glass, bubbles up out of containers, flows around objects and even climbs up walls. As if superfluid helium-4 was not strange enough, in 1941 it was also predicted that it should contain an exotic, particle-like excitation – a quasiparticle – called a roton. After many years of trying to verify this prediction, researchers at the University of California now claim to have successfully created a roton structure in an atomic superfluid of cesium-133. Read More
— Aircraft

GE mixes lasers and water to keep turbine blades cool during drilling

By - February 8, 2015 3 Pictures
Turbine blades for use in jet engines need to be made of a hard, unyielding exotic material made to exact specifications, which means the drilling of tiny cooling holes in the blades runs the risk of ruining them. To prevent this from happening, GE is combining the heat of the laser beam with the cooling of the water jet to drill holes without weakening the blades. Read More
— Electronics

Optical antenna may allow LEDs to replace lasers in host of devices

By - February 4, 2015 3 Pictures
By applying 120 year old radio frequency antenna theory to the much newer field of photonics, researchers at Lawrence Berkeley National Laboratory claim to have produced a prototype optical antenna that increases the intensity of emission from a nanorod light source by more than 115 times. This technique may offer the opportunity to replace power-hungry lasers in short-range optical communications devices with enhanced low-power LEDs. Read More
— Science

New micro-ring resonator creates quantum entanglement on a silicon chip

By - January 28, 2015 1 Picture
The quantum entanglement of particles, such as photons, is a prerequisite for the new and future technologies of quantum computing, telecommunications, and cyber security. Real-world applications that take advantage of this technology, however, will not be fully realized until devices that produce such quantum states leave the realms of the laboratory and are made both small and energy efficient enough to be embedded in electronic equipment. In this vein, European scientists have created and installed a tiny "ring-resonator" on a microchip that is claimed to produce copious numbers of entangled photons while using very little power to do so. Read More
— Electronics

First germanium-tin semiconductor laser directly compatible with silicon chips

By - January 22, 2015 2 Pictures
Swiss scientists have created the first semiconductor laser consisting solely of elements of main group IV (the carbon group) on the periodic table. Simply, this means that the new device is directly compatible with other elements in that group – such as silicon, carbon, and lead – and so can be directly incorporated in a silicon chip as it is manufactured. This presents new possibilities for transmitting data around computer chips using light, which could result in potential transfer speeds exponentially faster than possible with copper wire and using only a fraction of the energy of today’s integrated circuits. Read More
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