Internet

Project Taara beams the Internet across the Congo River

A team of researchers at Alphabet's research and development company, X, working on what has been named Project Taara, has successfully set up a laser-based system for beaming the internet across the Congo River at speeds ...

Engineering

Scalable manufacturing of integrated optical frequency combs

A collaboration between EPFL and UCSB has developed a long-anticipated breakthrough, and demonstrated CMOS technology—used for building microprocessors and memory chips—that allows wafer-scale manufacturing of chip-scale ...

Engineering

Team uses AI to predict 3D printing processes

Additive manufacturing has the potential to allow one to create parts or products on demand in manufacturing, automotive engineering, and even in outer space. However, it's a challenge to know in advance how a 3D printed ...

Robotics

Using optogenetics to control movement of a nematode

A team of researchers from the University of Toronto and Lunenfeld-Tanenbaum Research Institute, has developed a technique for controlling the movements of a live nematode using laser light. In their paper published in the ...

Telecom

Laser communications: Empowering more data than ever before

Launching this summer, NASA's Laser Communications Relay Demonstration (LCRD) will showcase the dynamic powers of laser communications technologies. With NASA's ever-increasing human and robotic presence in space, missions ...

Energy & Green Tech

Perovskite solar modules: High efficiency on a large surface area

From cell to module without loss of efficiency: This is one of the main challenges of perovskite photovoltaics. Researchers at Karlsruhe Institute of Technology (KIT) have now managed to produce perovskite solar modules with ...

Consumer & Gadgets

Smart finger ring with integrated RFID chip

House key, wallet, health insurance card, hotel key card—a smart finger ring could replace all these in the future. Produced by a 3D printing process, the ring has an integrated RFID chip, tamper-proof, sealed and invisible. ...

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Laser

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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