Abstract: A novel technique is proposed for estimating the angle-of-arrival (AOA) in free-space laser communication based on the shape of a laser beam spot on a flat surface. Two methods are ...

Terahertz radiation (THz), electromagnetic radiation with frequencies ranging from 0.1 and 10 THz, is central to the ...

Caltech scientists are developing laser-driven lightsails that could push spacecraft beyond our solar system. Their research ...

Over the years, manufacturers have relied on traditional cutting methods like mechanical cutting, plasma cutting, waterjet cutting, and others. However, with the rise of fiber laser cutting, American ...

Caltech researchers develop a platform to characterize ultrathin membranes for lightsails, advancing the quest for ...

The idea of traveling through interstellar space using spacecraft propelled by ultrathin sails may sound like the stuff of sci-fi novels. But in fact, a program started in 2016 by Stephen Hawking and ...

Researchers have proposed a new propulsion method that could make ... Most theoretical studies on "beam riders" for interstellar travel have focused on laser beams, which are composed of particles ...

Their test platform includes ... The new method lets the device act additionally as a power meter to measure both the force and power of the laser beam. "The device represents a small lightsail ...

There are wireless computer mice, touchpads, TV remotes, and laser pointers … and then there's the Xring D13. It combines all of those tools in one wireless device, which could be yours for US$109.

Abstract: In this letter, a phase synthesis method for mechanical beam scanning ... constant in the range of 0-45° incidence angle. Using this element, an FDT-based MERA prototype was designed and ...

In 2016, construction of the High Energy Laser Beam Control Research Testbed (HBCRT) was completed by the NPS research team.