News tagged with quantum cascade lasers

New terahertz device could strengthen security

We are all familiar with the hassles that accompany air travel. We shuffle through long lines, remove our shoes, and carry liquids in regulation-sized tubes. And even after all the effort, we still wonder if these procedures ...

dateNov 21, 2014 in General Physics
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Sensor network tracks down illegal bomb-making

Terrorists can manufacture bombs with relative ease, few aids and easily accessible materials such as synthetic fertilizer. Not always do security forces succeed in preventing the attacks and tracking down ...

dateOct 01, 2014 in Engineering
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Laser physics upside down

At the Vienna University of Technology a system of coupled lasers has been created which exhibits truly paradoxical behaviour: An increase in energy supply switches the lasers off, reducing the energy can ...

dateJul 15, 2014 in Optics & Photonics
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Strange physics turns off laser

Inspired by anomalies that arise in certain mathematical equations, researchers have demonstrated a laser system that paradoxically turns off when more power is added rather than becoming continuously brighter.

dateJun 17, 2014 in Optics & Photonics
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Chemical sensor on a chip

Using miniaturized laser technology, a tiny sensor has been built at the Vienna University of Technology which can test the chemical composition of liquids.

dateJun 11, 2014 in General Physics
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Ultra-thin light detectors

A new, extremely thin kind of light detectors was created at Vienna University of Technology. Two very different technologies were combined for the first time: metamaterials and quantum cascade structures.

dateMar 27, 2014 in General Physics
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Harnessing randomness to improve lasers

Randomly arranged items usually have poor optical properties. The rough—or random—surface of a frosted-glass window, for example, obscures the view of an object. The optical industry therefore expends ...

dateJan 15, 2014 in Optics & Photonics
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