Semiconductor lasers are the most widely used lasers due to their compact size, high efficiency, low cost and wide spectra. But they suffer low output power and low beam quality—two specifications difficult to improve simultaneously. ...
Optics & Photonics
May 5, 2022
0
306
The high efficiency, light weight and flexibility of the latest solar cell technology means photovoltaics could provide all the power needed for an extended mission to Mars, or even a permanent settlement there, according ...
Space Exploration
Apr 27, 2022
21
429
The ground-based laser system homed in on the red drone flying by, shooting a high-energy beam invisible to the naked eye. Suddenly, a fiery orange glow flared on the drone, smoke poured from its engine and a parachute opened ...
Optics & Photonics
Apr 14, 2022
1
33
Molecular clouds are collections of gas and dust in space. When left alone, the clouds remain in their state of peaceful equilibrium.
General Physics
Apr 12, 2022
0
137
A new study by Chinese researchers demonstrates a novel approach to enhancing the storage performance of batteries and capacitors. The researchers developed a simple yet efficient way to produce a material with excellent ...
Nanomaterials
Apr 6, 2022
0
79
Seismic and acoustic data recorded 50 meters away from a research nuclear reactor could predict whether the reactor was in an on or off state with 98% accuracy, according to a new study published in Seismological Research ...
Earth Sciences
Mar 16, 2022
0
297
A massive winter storm is bringing gusting winds to much of the eastern U.S. this weekend and is expected to dump a foot snow in some areas of the northeast as it brings freezing temperatures to the southeast.
Environment
Mar 14, 2022
0
32
Researchers have observed extremely high rates of melting at the bottom of the Greenland Ice Sheet, caused by huge quantities of meltwater falling from the surface to the base. As the meltwater falls, energy is converted ...
Earth Sciences
Feb 21, 2022
18
845
Data traffic is rapidly growing and can soon overload the current internet infrastructure. The key to solve this overload problem is to improve the data transmission over optical fibers. Vinicius Oliari defended his Ph.D. ...
Optics & Photonics
Jan 24, 2022
0
39
A newly published theoretical and computer modeling study suggests that the world's most powerful lasers might finally crack the elusive physics behind some of the most extreme phenomena in the universe—gamma ray bursts, ...
Quantum Physics
Sep 28, 2021
130
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