Connect with us

Published

on

Laser technology underpins many modern applications requiring precise measurement and communication. Scientists led by NTNU’s Johann Riemensberger have developed a new integrated laser that is fast, powerful, relatively inexpensive, and easy to use. The work is a collaboration with Switzerland’s École Polytechnique Fédérale de Lausanne (EPFL) and chip specialist Luxtelligence. This approach overcomes key limitations of conventional precision lasers, which are typically large, costly and difficult to adjust. According to Riemensberger, such lasers could enable small, affordable, high-performance instruments and communication systems.

Advanced materials, microscopic circuits

According to the study published in Nature Photonics, the new laser is implemented on a photonic chip using advanced materials such as thin-film lithium niobate, leveraging its electro-optic (Pockels) effect for ultrafast, mode-hop-free frequency tuning. It combines the lithium niobate circuit with a commercial semiconductor gain chip, yielding a laser that is both powerful and robust.

It emits a stable beam and allows the frequency to be adjusted quickly and smoothly without mode hops. Notably, the device can be operated using a single tuning knob instead of multiple controls. Because it relies on standard chip fabrication processes, the laser can be mass-produced inexpensively. “Our findings make it possible to create small, inexpensive and user-friendly measuring instruments and communication tools with high performance,” Riemensberger says.

Self-driving cars and air quality detectors

Conventional precision lasers are often large, expensive and difficult to tune. Riemensberger notes that “our new laser solves several of these problems”. The team demonstrated the device in LiDAR (light detection and ranging) systems for self-driving cars, where lasers measure distance by timing reflected pulses. This laser achieved a range precision of about four centimeters, enabling very high-resolution environmental mapping.

Its rapid, mode-hop-free tuning allowed it to sweep across gas absorption lines, enabling sensitive detection of trace hydrogen cyanide, demonstrating potential for rapid gas sensing in safety and environmental monitoring. In fact, Simone Bianconi of EPFL notes that the laser’s combination of tunable, low-noise output makes it well-suited for coherent LiDAR and precision gas sensing.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Honor X9c India Launch Confirmed; to Get 108-Megapixel Rear Camera, 1.5K Curved AMOLED Display



NASA and ISRO Confirm Japan’s Moon Lander Resilience Crashed at Mare Frigoris

Continue Reading

Science

James Webb Telescope Captures First Direct Image of Saturn-Mass Exoplanet

Published

on

By

James Webb Telescope Captures First Direct Image of Saturn-Mass Exoplanet

The James Webb Space Telescope (JWST) has captured its first direct image of a newly discovered exoplanet. Astronomers announced that Webb imaged a Saturn-mass planet orbiting the nearby young star TWA 7. Dubbed TWA 7 b, the planet’s mass is only about 0.3 times that of Jupiter – roughly Saturn’s mass – making it the smallest planet ever seen via direct imaging. Most of the nearly 6,000 known exoplanets have been detected indirectly. To spot TWA 7 b, the JWST team used a coronagraph (like a solar eclipse) to block the star’s light and reveal the faint planet.

Detecting a Hidden World

According to the study published in the journal Nature, Webb’s team targeted TWA 7 because its dusty disk is viewed nearly face-on, revealing clear ring structures. They used Webb’s MIRI instrument with a coronagraph to mask the star’s glare. After processing the data, a faint infrared point source appeared roughly 1.5 arcseconds from TWA 7 (about 50 times the Earth–Sun distance).

This source lies in a gap of the star’s second dust ring. Its brightness and color match what theoretical models predict for a young, cold planet roughly Saturn’s mass. The object seems to be carving out the ring gap just as an orbiting planet would. Astronomers ruled out other explanations (like a background star) to confirm the signal is best explained by a planet.

A Step Toward Smaller Worlds

TWA 7 b’s Saturn-like mass makes it about ten times less massive than any exoplanet previously captured in a direct image. Its discovery shows that Webb can now image worlds far smaller than the giant exoplanets seen before. Scientists say the telescope may eventually detect planets as light as 10% of Jupiter’s mass, pushing toward Earth-like size.

This breakthrough “paves the way” to imaging truly terrestrial planets in the future. Astronomers even predict that upcoming observatories could dramatically increase the number of Earth-size planets seen by direct imaging. Next-generation telescopes – on the ground and in space – are being planned with even more powerful coronagraphs to hunt for the first directly photographed Earth analogues.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Gemini on Android Will Soon Connect to Apps Even If User Disables Activity Logs, Won’t Affect Privacy



How to Delete Emails in Bulk in Gmail Using Different Methods

Related Stories

Continue Reading

Science

James Webb Telescope Detects Methanol and Ethanol Near Young Stars, Hinting at Life’s Origins

Published

on

By

James Webb Telescope Detects Methanol and Ethanol Near Young Stars, Hinting at Life’s Origins

In the recent research done by using the James Webb Telescope, in March 2024, scientists found that ethanol and other icy organic compounds near protostars IRAS 2A and IRAS 23385. The findings were published in the JOYS+ program. It can offer insights into the cosmic chemistry that can help in knowing the formation of the planet and the potential for life on it. This also suggests how the building blocks in life can travel in space. The scientists observed alcohol in the orbit of a young star, adding to the understanding of life on Earth.

Methanol and Its Isotopes Detected Around Star HD 100453

As per the recent study conducted by NASA’s JWST, Methanol and its isotopes have been found in gases around the star called HD 100453. It is about 330 light years away from our planet. It has been observed for the first time that scientists have found isotopes of methanol in the shape of a disk. This was reported on June 5, 2025, in the Astrophysical Journal Letters.

Methanol: A Building Block of Life

Methanol acts as a building block for organic compounds like amino acids, which are essential for life. Researchers had found that methanol, but not the rare isotopes, is star-forming structures. These isotopes of methanol give a valuable insight into the ingredients needed for building life on Earth.

HD 100453: A Star Bigger Than the Sun

HD 100453 is larger than the Sun, with more than 1.6 times the mass of the Sun. This signals that methanol and other molecules in the disk exist as gas and farther from the home star, which could be the case when the solar system was quite young. The smaller stars consist of cooler disks, and the molecules are frozen and undetectable.

Link Between Methanol and Comet Chemistry

The researchers found that the ratio of methanol to other organic molecules is similar to that of the comets in the solar system. The findings signal that the ices near the protoplanetary disks clump to form comets filled with organic molecules, which are the result of collisions. This research gives the idea that comets may have played a major role in offering important organic material to the Earth billions of years ago.

Continue Reading

Science

Rubin Observatory Captures Distant Nebulae From Chilean Mountaintop

Published

on

By

Rubin Observatory Captures Distant Nebulae From Chilean Mountaintop

Two spectacular stellar nurseries—the Lagoon and Trifid Nebulae—have been revealed in dazzling detail in one of the first public images from the Vera C. Rubin Observatory. Located 4,000 light-years from Earth, these distant clouds of gas and dust mark the debut of the observatory’s scientific capabilities. Released during a livestream on June 23, the images offer a vivid preview of what the observatory will capture over the next decade from its high-altitude post atop Cerro Pachón in Chile’s Andes, using the Legacy Survey of Space and Time (LSST) to explore cosmic evolution.

Rubin Observatory to Scan Southern Sky Every 3 Nights, Mapping Galaxies and Dark Matter

As per observatory director Željko Ivezić, the image sets demonstrate the facility’s wide field of view and ability to operate in the “time domain”—detecting changes in space over time. During a watch party in Washington, D.C., Ivezić noted the diversity of celestial objects captured, from nearby bright stars to distant red elliptical galaxies. At a June 9 briefing, Princeton University astronomer Yusra AlSayyad described the Rubin Observatory’s advanced image processing and its role in enabling rapid discovery across vast sky segments.

The observatory, which over the next decade will take in the whole southern sky every three or four nights, features a giant self-adjusting telescope as well as a car-size digital camera, the largest ever built. About 1,000 images will be taken nightly during each 30-second exposure. This quick cadence gives scientists the ability to detect millions of transient objects, such as asteroids, supernovae, and possibly unknown phenomena as they happen.

Along the way, the observatory is also going to help map out galaxies and star systems and the distribution of dark matter, an invisible material that makes up about 85 percent of the mass of the universe. The observatory is named for the astronomer Vera Rubin, who gathered crucial data proving the existence of dark matter in the 1970s. “We are hopeful that we will be gathering more data later this year after construction is done.”

The U.S. National Science Foundation and Department of Energy, and the Rubin Observatory, promise to transform the field of astronomy. The project, as telescope scientist Sandrine Thomas says, is poised to revolutionise cosmic research, and it’s going to bring the general public along, in real time, for the story of the universe as it happens.

Continue Reading

Trending