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Tag Archives: Laser

Researchers transmit data via a semiconductor laser, opening the door to ultra-high-speed Wi-Fi

This device uses a frequency comb laser to emit and modulate microwaves wirelessly. The laser uses different frequencies of light. The researchers use this phenomenon to send a song wirelessly to a receiver. Credit: Marco Piccardo / Harvard SEAS              You've never heard of Dean Martin like this.                                                 Researchers from the Harvard John A. Paulson's School of Engineering and …

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NASA's asteroid sample shot Bennu with a laser, and this is the result

NASA's OSIRIS-REx mission has been steadily progressing since the spacecraft arrived at the diamond-shaped space rock known as Bennu a few months ago. The rock ends up being far more , well, dirty than NASA originally expected. Bennu's surface is ready to be dropped on NASA's team that's ready to take a look at the asteroid to collect samples. Related …

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NASA's asteroid probe fired Bennu with a laser, and that's the result

NASA's OSIRIS REx mission has been steadily advancing on the diamond-shaped space rock Bennu since the spacecraft arrived several months ago, but not everything went according to plan. The stone ended far more Well, dirtier than originally expected by NASA. Bennu's surface is full of debris, which poses a challenge for the NASA team to decide where the probe must …

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NASA's asteroid probe fired Bennu with a laser, and that's the result – BGR

NASA's OSIRIS REx mission has been steadily advancing on the diamond-shaped space rock Bennu since the spacecraft arrived several months ago, but not everything went according to plan. The stone ended far more Well, dirtier than originally expected by NASA. Bennu's surface is full of debris, which poses a challenge for the NASA team to decide where the probe must …

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Zhores Alferov, 88, dies; Nobel winner paved path for laser technology

"The feeling I felt then could not be compared to anything," Alferov wrote about his early work at Ioffe. He spent his whole life at the Institute and won the Lenin Prize, the highest honor of Soviet science. 1972; 1987 director of Ioffe; and the Leningrad-St. Petersburg Branch of the Academy of Sciences 1989. In the mid-1990s he had to …

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Physicists set world record in plasma plasma acceleration with laser drill

Enlarge / Various drivers can be used with Wakefield acceleration. In the laser-controlled case (top), a strong laser pulse is emitted into a preformed plasma. In the proton-driven scenario (below), a high-energy proton packet is sent into a gas. Particle accelerators can accelerate subatomic particles to near the speed of light. The disadvantage is that this requires miles of tunnels, …

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New Pentagon warns of Russian and Chinese laser threats to US satellites

The report said, "China and Russia, in particular, are developing a variety of means to exploit US position in space," the Defense Intelligence Agency said. what is published Monday, is titled "Challenges to Security in Space," and examines Russian, Chinese, Iranian and North Korean space capabilities. US satellites play a critical role in everything from navigation to weapons targeting and …

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