The 90-meter-high piece of graffiti scrawled on the back of this office building in Rotterdam, Netherlands, was the product not of hundreds of aerosol cans but of Laser Tag, an open-source painting program from New York Citybased Graffiti Research Lab. As an ordinary green laser pointer’s beam was drawn across the building, a sensitive low-noise camera (developed for astronomers) captured its movements and relayed them to a laptop running the software. Then a movie projector ”painted” the squiggles onto the multistory canvas in real time.
Optical Antennae Amplify LEDs for Fast Interconnects
Will LEDs replace semiconductor lasers in optical circuits?
Coupling Microwaves to Optoelectronics With Sound
Will sound waves help extend microwave links?
Li-Fi-like System Would Bring 100-Gbps Speeds Straight to Your Computer
System sends light signals from the optical fiber fiber through the air to your computer
A Möbius Strip Made of Light
The weirdest wave of light yet
The Germanium-Tin Laser: Answer to the On-Chip Data Bottleneck?
Silicon-compatible laser could be suitable for data transmission between processor cores, but it's got some problems
Photonic Circuits Get a Boost from Combination of 2-D Materials
Novel material can both squeeze light and propagate it over signficant distances
Nanoscale Structures Enable Magnetic Mirrors Without Metals
Potential impact could be a new class of chemical sensors, solar cells and other other optoelectronic devices
The Blue LED Has Many Parents
Without Isamu Akasaki, it could have taken even longer for the device to emerge
A Faster Way To Make Quantum Computing Chips
An easier method of photon polarization could advance the development of quantum computers
Plasmon Laser Is Fastest to Switch
Zip? Zap! Nanolaser switches 1000 times as fast
Nobel Prize Puts Blue LEDs in Spotlight
IEEE Spectrum’s ongoing coverage of blue LEDs provides context for the advances that were honored by the 2014 Nobel Prize in Physics
Long-Lived Blue OLED Could Lead to Better Displays
Researchers extend the lifetime of blue phosphorescent OLEDs, bringing them much closer to commercial use
Identifying Explosives at a Distance
The random Raman laser is the lastest technology to detect explosives and other nasty stuff from a safe vantage
Quantum Photonics on a Single Chip?
Lithium niobate is becoming the silicon of quantum optics
Camouflage Technology Copies Cuttlefish Trick
Multilayer flexible electronics makes pattern according to the light falling on it
Raman Laser Could Identify Explosives at a Distance
A new technique that causes powders to emit laser light could distinguish a harmless substance from an explosive
Low-Power Laser Could Speed CPUs
The polariton laser now runs on electricity, operates at room temperature, and could be key to on-chip optical interconnects
One Atom + Two Photons = Quantum Computing Switch
Scientists have made an all-optical switch out of a single atom that could make quantum computers much simpler
Nanotubes Capture Terahertz Radiation
Simple array of nanotubes sense terahertz with no external power needed, could make security scanners cheaper
Graphene Plasmonic Circuits Take a Critical Step Foward
Graphene-based optical antennas could help create photonic logic circuits