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
Technologies that take advantage of novel quantum mechanical behaviors are likely to become commonplace in the near future. These may include devices that use quantum information as input and output data, which require careful ...
Quantum Physics
Dec 22, 2021
0
507
Ignition is a key process that amplifies the energy output from nuclear fusion and could provide clean energy and answer some huge physics questions.
Plasma Physics
Aug 17, 2021
39
13843
Astrophysicists from the University of Bath have developed a new method for pinpointing the whereabouts of extremely rare extragalactic objects. They hope their technique for finding 'changing-look quasars' will take scientists ...
Astronomy
May 19, 2021
21
1435
Researchers have worked out how to improve the assessment of progress towards limiting global heating to 2 degrees C above preindustrial levels.
Earth Sciences
Apr 27, 2021
1
34
Humans are making Earth a broken and increasingly unlivable planet through climate change, biodiversity loss and pollution. So the world must make dramatic changes to society, economics and daily life, a new United Nations ...
Environment
Feb 18, 2021
68
365
As dust collects on the solar panels and winter comes to Elysium Planitia, the team is following a plan to reduce science operations in order to keep the lander safe.
Space Exploration
Feb 13, 2021
5
186
Thermoelectric materials can turn a temperature difference into electricity. Organic thermoelectric materials could be used to power wearable electronics or sensors; however, the power output is still very low. An international ...
Materials Science
Nov 11, 2020
0
198
One of the fundamental questions for climate scientists is the extent to which solar output may vary in the future. The sun's all-encompassing effect on Earth's atmosphere means that even slight changes in irradiance can ...
Astronomy
Jun 16, 2020
0
37
Terahertz lasers could soon have their moment. Emitting radiation that sits somewhere between microwaves and infrared light along the electromagnetic spectrum, terahertz lasers have been the focus of intense study due to ...
Optics & Photonics
Jun 11, 2020
0
215
