Tag Archives: Laser

New laser technique images quantum world in a trillionth of a second

by University of British Columbia, Phys.org

For the first time, researchers have been able to record, frame-by-frame, how an electron interacts with certain atomic vibrations in a solid. The technique captures a process that commonly causes electrical resistance in materials while, in others, can cause the exact opposite—the absence of resistance, or superconductivity.

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Gamma-ray laser moves a step closer to reality

by Iqbal Pittalwala, Phys.org

A physicist at the University of California, Riverside, has performed calculations showing hollow spherical bubbles filled with a gas of positronium atoms are stable in liquid helium.

The calculations take scientists a step closer to realizing a gamma-ray laser, which may have applications in medical imaging, spacecraft propulsion, and cancer treatment.

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‘Whisper’ laser tech sends audible messages to specific people

by Steve Dent, Engadget

It can beam tones, music and speech to someone’s ear from a distance.

Researchers from MIT have discovered a way to send highly targeted audio signals directly to someone’s ear at a distance using laser beams. The system works using the “photoacoustic” effect, where water vapor in the air absorbs light, forming sound waves. The research may pave the way to systems that allow audible messages to be transmitted to spies or other agents, warning them of impending danger like an active shooter.

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A startup is developing a 100-gigawatt laser to propel a probe to another star system. That may be powerful enough to ‘ignite an entire city.’

by Dave Mosher. Business Insider

An initiative called Breakthrough Starshot wants to explore another star system using ultra-powerful laser beams and wafer-thin spaceships.

Continue reading A startup is developing a 100-gigawatt laser to propel a probe to another star system. That may be powerful enough to ‘ignite an entire city.’