laser diode
Latest
Researchers develop 'wireless optical brain router' to manipulate brain cells
Optogenetics might be a relatively unknown area of neuroscience, but it's one that, thanks to some new research, could soon find itself (and its rodental subjects) in the spotlight. For the uninitiated, it's the practice of manipulating animal cells using light (with a little help from gene therapy). Until now, optogenetic equipment has been large and unwieldy, making testing on subjects (read: rats) painstaking. Startup, Kendall Research, has changed all this, creating wireless prototypes that weigh just three grams (0.11 ounces). By eschewing bulky Lasers for LEDs and Laser diodes, the equipment is small enough that it can be attached to the rodents. At that point, their brain function can be manipulated with the touch of a button, and different parts can be stimulated without breeding mutant variants -- a controversial practice that doesn't even yield results in real time. The "router" is powered wirelessly by super capacitors below test area, and researchers can conduct experiments remotely, even automatically. Human applications for this are still some way off, but we're sure our future overlords will make good use of it.
Add lasers to a tennis ball, drive your dog crazy (video)
It's a "programmable disco ball," a "cat toy for humans," and a "personal laser light show," all rolled into one. That's how one Matt Leone describes his latest creation, aptly known as the Laser Ball. To realize his dream, Leone drilled a set of holes into a garden variety tennis ball, and inserted about 14 laser diodes, each with an attached strip of diffraction grating. Said diodes were then synced up with an Arduino-equipped Teensy microcontroller nestled within the ball, alongside a rechargeable battery. As a cherry on top of this DIY sundae, Leone then incorporated an infrared remote package from Adafruit, allowing him to remotely jump start his next house party. The result is a cyborg-like ball that makes any LED cube look... square. Check it out for yourself, in the video after the break.
BMW developing laser headlights, officially over LEDs
We know, our whip doesn't have LED headlights either, but that's not stopping BMW from pressing on with its laser powered successor. Purportedly ready "within a few years," the updated beams boast an intensity a thousand times greater than their forebearers, all while consuming less than half the power -- helping EV drivers eke out a little more range. With each laser diode one hundred times smaller than its LED counterpart, Bavaria reckons the tech will help it design and package future light fixtures that are more bodacious than those from its competition in Ingolstadt. There's no firm date for availability, but the company says the new lighting tech will debut on the production version of its i8 concept. Sounds great, so where do we sign up for our frickin' laser bimmer?
Audi announces A2 electric concept car, uses lasers to ensure safety of future humans
Lasers make everything better, including (but not limited to): microphones, kidneys and Audi's electric A2 concept. This newest flight of fancy uses a laser diode as the rear fog lamp, which projects a red triangle onto the road to let other drivers know you're there. The German car-maker has tricked out the rest of the EV's lighting system as well by implementing matrix beam technology using LEDs and microreflectors -- giving it high resolution, non-glaring beams and intelligent tail lights that change in intensity based on weather conditions. Claiming other state-of-the-art features like gesture controls instead of keys, and brake lights that glow brighter the harder you press, it sounds like this would be a pretty sweet ride -- if it ever makes it to market. No word on the other, insignificant details (ya know, like what actually powers the thing) but there's plenty more about the car's lighting system in the PR after the break.
University of Central Florida's miniature laser diode aims to speed up networking
The use of laser as a means of data transmission is hardly anything new, but the current crop of laser diodes can only handle so much stress, provided that they don't fail in the first place. Luckily, the geniuses over at the University of Central Florida are about to deliver a smaller yet more intense and more reliable diode, which will lead to many more potential applications even beyond the scope of networking -- think cheaper, more effective hair removal. Little is said about how Professor Dennis Deppe's team made this possible, but once they work out how to optimize the operating voltage for better efficiency, Deppe reckons we'll see diode-embedded high speed, high bandwidth cables in the shops in four or five years' time. Seriously, we'd do anything to keep our latency low for some HD gaming action.
Sony releases 400mW-output blue-violet laser diode, could make BDXL blossom
Now that the BDXL spec is finalized, a handful of DVR announcements have trickled out to support the higher-capacity Blu-ray format. Sony's release of the SLD3237VF 400mW-output blue-violet laser diode, however, could flat-out open the floodgates. That's because, besides supporting the new larger capacity standard, it's the first diode of its kind to have an output of 400mW or higher. This gives manufacturers more flexibility in their hardware design to use a wider array of optical components. The cost for the part itself is roughly $12, but no telling what kind of premium it'll actually entail by the time it hits retail. We do know that all that additional memory should provide plenty breathing room for higher production 3D Blu-ray discs in the future, or enough HD bonus features space to make The Lord of the Rings extended edition box go on a serious South Beach diet.
Penn State's optical wireless tech does gigabit, bounces off walls
We love our WiFi, but it's far from perfect. Speed depends greatly on conditions, magnetic waves don't always play nicely with sensitive equipment, and the ability for someone to drive by and steal your precious infos is always disconcerting. Researchers at Penn State have what they believe is a better solution: light. The team uses laser diodes to convert data signals to light, then photo diodes on the other end to convert it back to data, a system that (unlike others we've seen) doesn't require direct line of sight as the light will bounce off of walls -- except those painted black (sorry goths). Data access could easily be constrained within a single room or, if it was needed elsewhere, wired relays could bring it through walls. Speeds at this point are already at the 1Gb/sec range, twice what Siemens was able to manage a few weeks ago, and enough for wireless transmission of high-definition video. Someday your Wiimote and remote might not be the only things beaming back at ya in the living room.
Sharp and Nichia link up for LED patent cross-licensing deal
While RPTVs teeter on a bellbottom-styled return to the mainstream, Sharp and Nichia are focused squarely on the future. The two have just entered into a LED patent cross-licensing agreement covering both LEDs and laser diodes; the deal grants each company the right to use "inventions related to LEDs and laser diodes covered by the vast number of patents owned by the respective companies in Japan and in major countries." The release gets interesting when touching on Sharp's intentions -- it states that the company is hoping to "create unique, one-of-a-kind products in the future that feature both devices [Blu-ray recorders and LED lighting] at their core." Color us very intrigued.
Physicists develop plastic semiconductors for laser diode use
Not to get all scientific on you or anything, but a team of Imperial physicists have just figured out a way to use plastics in laser diodes. For the uninitiated, scientists have been unable to make plastic semiconductor laser diodes because they had not yet found / developed "any plastics that could sustain a large enough current whilst also supporting the efficient light emission needed to produce a laser beam." Now, however, that obstacle has reportedly been overcome by making minor tweaks to a given plastic's chemical structure, and the resulting material will transport charges some 200 times better than before without impeding its ability to emit light. By the sound of things, the crew behind the breakthrough isn't quite ready to offer up the solution to manufacturers, but with a bit more work, we suspect that notion will change.[Via Slashdot]
Atmel intros 'industry's smallest' laser diode driver for HD DVD / Blu-ray
Atmel, the same firm known for cranking out uber-small GPS chips, has now created the "industry's smallest laser diode driver solution" for HD DVD, Blu-ray, DVD, and CD formats. The ATR0881 laser diode driver IC is available now and is designed for use in combination drives that play nice with all of the aforementioned discs. Notably, the ATR0881 itself is housed in a minuscule four- x four-millimeter QFN24 package, and should prove extremely useful in half-height combo drives as well as slim drives found in laptops. Smaller optical drives that handle every format harmoniously? Count us in.
