Science & Environment
Diamond laser system achieves 100% optical contrast in magnetic-field readout
Source: Phys.org - latest science and technology news stories · Published

Researchers at Fraunhofer IAF have developed a laser-enhanced quantum sensor that combines high magnetic-field sensitivity with a large dynamic range. Using laser threshold magnetometry, they improved the ratio of sensitivity and dynamic range by a factor of up to 590 compared wi
Researchers at Fraunhofer IAF have developed a laser-enhanced quantum sensor that combines high magnetic-field sensitivity with a large dynamic range. Using laser threshold magnetometry, they improved the ratio of sensitivity and dynamic range by a factor of up to 590 compared with state-of-the-art approaches. The breakthrough is enabled by the first demonstration of 100% optical contrast, combined with strong laser readout signals.
The results, published in Nature Communications, open up new prospects for medical diagnostics, navigation, and resource exploration.
Related stories

Are you using AI to study? Here's how to do it well
Artificial intelligence (AI) means high school and college students now have access to a resource that can potentially "do all the work for them." While this can reduce students' immediate stress about submitting assignments, it may negatively impact their long-term learning.
Phys.org - latest science and technology news stories ·
Birds are more afraid of women than men. Scientists have no idea why
Scientists have uncovered a strange pattern in urban bird behavior: Across five European countries and 37 species, birds consistently fled sooner when approached by women than men. Researchers have no clear explanation for the difference, raising intriguing questions about how bi
All Top News -- ScienceDaily ·
A revolutionary new microscope could reveal the hidden machinery of life
Researchers have developed a revolutionary microscope that uses an incredibly powerful laser to make previously invisible cellular structures easier to see. The technology dramatically improves image clarity, allowing scientists to examine small proteins that conventional electro
All Top News -- ScienceDaily ·
People are taking an unapproved weight-loss drug. AI found something surprising
Researchers analyzing nearly 150,000 Reddit posts uncovered unexpected symptom reports linked by users to unapproved versions of retatrutide, including increased appetite, sleep disturbances, and elevated heart rates. The findings differ from clinical trial results and highlight
All Top News -- ScienceDaily ·
Astronauts’ hearts just passed a surprising test for Mars
A new study tracking 13 astronauts suggests that the human heart may be surprisingly well equipped for a journey to Mars, especially with regular exercise during spaceflight. Researchers found that astronauts' hearts adapted to months of weightlessness and handled simulated Marti
All Top News -- ScienceDaily ·