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lasers posts

Fuji Heavy Industries outs friendless, autonomous farming robot

by Laura June posted Oct 29th 2009 at 1:17PM

Fuji Heavy Industries in Japan has announced what it's calling 'the first' autonomous farming robot. This bot, which is about six and a half feet long and runs on gas, sends and receives laser signals to orient itself by way of reflective plates placed every 30 feet, using them to judge distances. This bad boy can grow fruits and veggies all by its lonesome, and can even operate in a greenhouse. The farming robot -- which is expected early next year -- will run about $100,000, but we'd suggest you buy two so he can have a buddy.

Bell Labs uses 155 lasers to beam ridiculous amounts of data over 7,000 kilometers

by Tim Stevens posted Oct 1st 2009 at 11:09AM

Let's say you have a monumental collection of data at your place. Like, say, everything ever posted to the Pirate Bay. And let's say the Feds are beating down your door and you need to dump that data to a secure off-site storage facility right now. Who do you call? A lawyer, of course, because currently there's no practical way to do such a thing. But, in the not too distant future you might call up Bell Labs, a company whose scientists managed a monumental 100 Petabits per second per kilometer transmission rate using 155 lasers at different optical frequencies. If you take distance out of the equation you're looking at 15.5 Terabits per second, more than ten times faster than the last laser transmission test we reported on. Naturally, this was conducted in conditions that don't quite equate to the real world at large, and it's going to be a long time before we have fiber pipes like that beaming data into our homes. So, hands up chum, and make that one call count.

Time Telescope greatly improves optical data transmission, won't undo your past mistakes

by Joseph L. Flatley posted Oct 1st 2009 at 3:06AM

Researchers at Cornell have developed a "time telescope" from silicon waveguides that work like the two lenses of a telescope (or microscope) to compress and decompress data. Using the method, they were able to shift a 24-bit light pulse from 2.5 nanoseconds to 92 picoseconds in length without losing any information -- delivering the it to its destination 27 times faster than traditional fiber optics. Of course, the current 24-bit limit is too small for real world use, but it is a start -- and since this uses industry-supported fabrication technology, there's a chance that we may actually get our hands on one of these things in the not-too-distant future. Insert your own Marty McFly joke here.

[Via Slashdot]

Roman Abramovich's Eclipse has anti-photo 'laser shield'

by Vladislav Savov posted Sep 22nd 2009 at 4:57AM

If you ask a young boy to spec out his ideal boat, you might hear of helipads, swimming pools, missile-proof hulls, mini-submarines and laser shields. Well, Russian billionaire Roman Abramovich is one of those people with the time and money to listen to his inner child, and he's gone and put all of the above together inside a $1.2 billion 557-foot vessel of luxury and excess. The Eclipse will attempt to repel paparazzi with a laser system that is said to "detect CCDs" (we suspect they mean it detects the autofocus light), and responds with an intense beam of light that precludes unwanted photography. We don't know how well the automatic system will work, but it must be fun to manually point the lasers at the paps and go "pew pew!"

[Via Fark]

Laser-Accurate microphone proves once and for all that everything is better with lasers

by Paul Miller posted Sep 21st 2009 at 2:28PM

The press release on this one is full of superlatives, but somehow most of them seem justified. Schwartz Engineering & Design just announced its Laser-Accurate microphone technology, which promises to provide "pure sound" from a microphone for the "first time ever." It works by detecting the impact of sound on the motion of particles in a stream of air by running a laser across them, and was created by David Schwartz, who holds several digital audio patents, including one that is foundational to the MP3 format (which is, ironically, not a traditional friend to the audiophile). The idea is to avoid the inherent "coloring" of sound due to a regular microphone's physical diaphragm, since the moving particles are virtually weightless. Of course, it seems that a Laser-Accurate mic would have plenty of variables of its own to deal with in regards to the stream of air, but we suppose we'll find out just how tight Schwartz has this thing when it's shown off for the first time in NY next month. PR is after the break.

Continue reading Laser-Accurate microphone proves once and for all that everything is better with lasers

Scientists set lasers on cells, end up playing Pong

by Donald Melanson posted Sep 17th 2009 at 7:42PM

Researchers have devised plenty of innovative ways of viewing living cells, but their options are a bit more limited when it comes to actually manipulating cells without, you know, destroying them. Scientists at the University of California, Los Angeles have now come up with one promising new possibility, however, using lasers instead of the fixed electrodes more commonly used today. Those, as you might expect, don't hit the cells directly, but are rather used to shine light on a "high-tech Petri dish," which has a grid of light detectors built into its floor and sets of transparent electrodes on the top and bottom. When lit up in a pattern of a circle or square, the cells can then be isolated and moved about at will or, conceivably, even be used for a game of Pong. Check out the video after the break to see for yourself.

Continue reading Scientists set lasers on cells, end up playing Pong

Uber-nano nanolasers could lead to faster computers, reliable internet, neverending list of awesome things

by Laura June posted Aug 5th 2009 at 6:42PM

Researchers at Arizona State University and Technical University of Eindhoven in the Netherlands have been collaborating on a project to make lasers significantly smaller than the ones that are currently available, by finding a way around the traditionally accepted diffraction limit -- the idea that the size of lasers in any one dimension (say, thickness) is limited to half of the wavelength involved. One way around the size limitation, they've found, is to use a combination of semiconductors and metals like gold and silver, which causes electron excitement which helps confine the light in a laser to smaller spaces than that of the supposed limit. Using this method, the team has created nanoscale lasers that are one quarter of the wavelength or smaller -- as opposed to the previously accepted size limitation of one half of the wavelength. As far as consumer applications go, the smaller the laser, the easier it will be to integrate them into small electronics components, leading to things like faster products and more reliable internet access. Sounds great, right? Well, chill out: they're still working on it, with no word on when we'll see any street application of the nano nanolasers.

[Via Gizmag]

Spintronics magic appears again, aims to vastly accelerate data storage and retrieval

by Darren Murph posted Jun 7th 2009 at 5:21AM

As the list of "awesome things that won't ever happen" grows ever longer, we've got a brilliant team of French physicists who have seemingly concocted a method for storing and retrieving data on hard discs that's around 100,000 times faster than usual. Yes, 100,000x. The trick is based around spintronics, an almost mythical procedure that involves the use of lasers, magnetic sensors and mutant abilities to shuffle data around at a dizzying rate. This particular method, however, improves upon the comparatively sluggish attempts of the past, as it uses photons that "modify the state of the electrons' magnetization on the storage surface." In layman's terms, this all means that the HDD you buy in 2098 will probably operate significantly faster than the one you picked up during Circuit City's going-out-of-business sale. Got it? Good.

Ultra-powerful laser could make incandescent light bulbs more efficient

by Darren Murph posted May 31st 2009 at 4:26PM

Look, LED light bulbs are fanciful, great for Ma Earth and a fine addition to any home, barber shop or underground fight club. But let's be honest -- even the guy that bikes through blizzards to get to work and wears garb that he grew in his basement isn't apt to shell out $120 a pop to have what's likely the most efficient light bulb American dollars can buy. Enter Chunlei Guo from the University of Rochester, who has helped discover a process which could morph a traditional incandescent light bulb into a beacon of burning light without using nearly as much energy as before. In fact, his usage of the femtosecond laser pulse -- which creates a "unique array of nano- and micro-scale structures on the surface of a regular tungsten filament" -- could enable a bulb to increase output efficiency in order to emit 100-watts worth of light while sucking down less than 60-watts of power. Per usual, there's no telling when this new hotness is likely to hit the commercial realm, but one's thing for sure: we bet GE's paying attention.

[Via Physorg]

World's largest laser opens for business in California

by Laura June posted May 29th 2009 at 9:49PM

Another day, another laser... well, not so fast. This particular laser just so happens to officially carry the "world's largest title." Built at Lawrence Livermore National Laboratory in Livermore, California, and housed in the National Ignition Facility -- or NIF -- it was completed at the end of March, and has just now been officially dedicated and opened for business. The laser inside the three-football field-sized building will aim to create a "star" on earth by focusing 192 beams at a pea-sized target, generating temperatures over 100 million degrees and pressure over 100 billion times the earth's atmosphere. The process will create nuclear fusion -- the reaction that powers the sun and the stars. it sounds pretty complicated, and we'd hate to be in town if something goes awry, but we're crossing our fingers for the team! Hit the read link for much, much more information about the project.

[Via Physorg]

Laser Matrix instructions will help you make an incredibly facile projector of your iPhone

by Laura June posted May 20th 2009 at 4:09PM

A clever DIY-er wanted to add some semblance of projector capability to his iPhone, without -- you know -- actually adding a projector to his phone. He chose instead to use the phone in tandem with a 5 x 7 laser matrix, five 8-bit D latches for controlling the laser pointers, a microcontroller, and a bit of (somewhat complex looking) code for the iPhone, resulting in the ability to "spell" out messages on a wall, or other surface. There's a super exciting video demo after the break -- check it o-u-t.

Continue reading Laser Matrix instructions will help you make an incredibly facile projector of your iPhone

New atomic clock claims title of world's most accurate

by Donald Melanson posted Apr 16th 2009 at 10:26PM

You may have thought that the previous world's most accurate clock was good at keeping time, but it's apparently nothing compared to this new strontium atomic clock developed by scientists at the University of Colorado, which is supposedly more than twice as accurate and just as atomic. To achieve that impressive feat, the scientists made use of the same so-called "pendulum effect" of atoms as before, but took things one step further by holding the atoms in a laser beam and freezing them to almost -273 degrees Celsius, or the temperature at which all matter stops resonating. In clock terms, that translates to about one second lost every 300 million years. Of course, that's still one second too many for the researchers, and they say they "dream of getting an atomic clock with perfect precision." You just know you never want to be late for a meeting with these guys.

Gurus develop way to shrink atomic clock... with lasers

by Darren Murph posted Mar 15th 2009 at 2:35PM

The world's most accurate clocks got even more accurate just a few years back, but now a team from the University of Nevada in Reno is looking to make the atomic clock way, way smaller. Housed at the National Institute of Standards and Technology (NIST) in Boulder, Colorado, these so-called "fountain clocks" send out clouds of caesium atoms through a vacuum chamber in a magnetic field; from there, microwaves in the chamber excite the atoms and then emit light as they drop to a lower hyperfine state. All that rocket science aside, the real point here is that all that magic requires a chassis about the size of a modern day refrigerator. Andrei Derevianko and Kyle Beloy have conjured up the idea of "trapping atoms in place using lasers," which would obviously require far less space for the time telling to happen. Just think -- a chicken in every pot and an atomic clock on every wrist.

[Image courtesy of PSU]

Scientists shoot down malaria-carrying mosquitoes with frickin' lasers

by Darren Murph posted Mar 15th 2009 at 10:22AM

Seriously, is there anything a laser can't do? A team of mad scientists in Washington have concocted a system that could essentially eliminate malaria-carrying mosquitoes with lasers, and the whole thing can be built from parts sourced on eBay. The so-called mosquito laser is credited to an idea from Lowell Wood, an astrophysicist who worked with Edward Teller, the "architect of the original plan to use lasers to shield America from the rain of Soviet nuclear arms." In theory, at least, the technology could one day be used to draw a laser barrier of sorts around a village. Of course, the trick is to make the lasers powerful enough to smoke the bugs without harming humans -- any of you Earthlings up for a clinical trial or two?

[Via eHow]

High-powered, jet-mounted laser one step closer to flying the terrifying skies

by Laura June posted Feb 26th 2009 at 8:47PM

The jet-mounted laser anti-missile system, brainchild of Northrop Grumman, Lockheed Martin, Boeing and the US Air Force, has been an ongoing project for quite some time. Well, it's progressed into a final test phase, as evidenced by a new video, which shows the plane strapped with a pilot-controlled laser which is able to intercept missiles significantly earlier than other existing anti-missile tech. The project has plans to continue testing throughout this year, but will also need to be approved by the Obama administration if it is to come to fruition. Feel free to insert obligatory Dr. Evil joke in comments. Check out the video after the break, but fair warning: it autoplays.

Continue reading High-powered, jet-mounted laser one step closer to flying the terrifying skies