Scientists on the hunt for compact and robust sources of multicolored laser light have generated the first topological frequency comb. Their result, which relies on a small silicon nitride chip patterned with hundreds of ...
Optics & Photonics
Jun 20, 2024
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356
Terahertz waves, known as non-ionizing radiation, can turn into ionization radiation when sufficiently many terahertz photons are focused in space and time. A team led by scientists in Korea and the U.S. has created the world's ...
Optics & Photonics
May 28, 2024
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32
Light measurement devices called optical frequency combs have revolutionized metrology, spectroscopy, atomic clocks, and other applications. Yet challenges with developing frequency comb generators at a microchip scale have ...
Optics & Photonics
May 22, 2024
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2
Chip-based devices known as frequency combs, which measure the frequency of light waves with unparalleled precision, have revolutionized timekeeping, the detection of planets outside of our solar system and high-speed optical ...
Optics & Photonics
Mar 14, 2024
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163
Stanford researchers have unveiled a new type of frequency comb, a high-precision measurement device, that is innovatively small, ultra-energy efficient, and exceptionally accurate. With continued development, this breakthrough ...
Optics & Photonics
Mar 6, 2024
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36
Gravitationally speaking, the universe is a noisy place. A hodgepodge of gravitational waves from unknown sources streams unpredictably around space, including possibly from the early universe.
An experimental antenna has received both radio frequency and near-infrared laser signals from NASA's Psyche spacecraft as it travels through deep space. This shows it's possible for the giant dish antennas of NASA's Deep ...
Space Exploration
Feb 8, 2024
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15
Within atomic and laser physics communities, scientist John "Jan" Hall has become a key figure in the history of laser frequency stabilization and precision measurement using lasers. Hall's work revolved around understanding ...
Optics & Photonics
Jan 15, 2024
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34
By using a special combination of laser beams as a very fast stirrer, RIKEN physicists have created multiple vortices in a quantum photonic system and tracked their evolution. This system could be used to explore exotic new ...
Nanophysics
Nov 21, 2023
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42
Experiments with single-photon detectors have revealed surprising statistics of light created via interactions with high-frequency sound waves.
Optics & Photonics
Nov 8, 2023
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