All articles tagged with #interferometry
Originally Published 6 months ago — by Rude Baguette
Scientists in China have developed a device using laser interferometry that can read text from nearly a mile away, raising significant privacy and security concerns due to its potential for surveillance and misuse, with future enhancements likely involving AI to improve accuracy and applications.
Originally Published 1 year ago — by Phys.org
NASA is planning to establish a lunar Long-Baseline Optical Imaging Interferometer (LBI) on the moon's far side as part of the Artemis Program, which aims to create a sustained program of lunar exploration and development. The proposed array, known as the Artemis-enabled Stellar Imager (AeSI), could take detailed images of stellar surfaces and their environments, leveraging the moon's "radio quiet" environment and extended periods of darkness. The facility's construction and maintenance will address key engineering concerns and could lead to advancements in astrophysics, public engagement, and inspire future generations of STEAM workers.
Originally Published 2 years ago — by Big Think
The Laser Interferometer Gravitational-Wave Observatory (LIGO) has achieved a significant breakthrough by surpassing the standard quantum limit for signals in its detectors. LIGO uses interferometry to detect gravitational waves, and by optimizing the trade-off between amplitude and phase uncertainty through the technique of squeezed quantum states, the detection sensitivity of LIGO has improved by up to 65%. This advancement allows for the detection of mergers at greater distances and the characterization of fainter-amplitude signals. The frequency-dependent quantum squeezing technique will be implemented in LIGO's fourth observing run, along with the upgraded Virgo detector and the KAGRA gravitational wave observatory, providing a clearer window into the gravitational wave Universe.
Originally Published 2 years ago — by Phys.org
Researchers have developed a new measurement technique using on-axis Kramers-Kronig interferometry to retrieve the spectrum of orbital angular momentum (OAM) in structured light waves. By applying the Kramers-Kronig relation, they were able to untangle the complex helical light pattern from intensity-only measurements, enabling single-shot retrieval in interferometry. This breakthrough has the potential to revolutionize technologies that rely on structured light, such as communication, imaging, and quantum information processing. The technique is simpler, faster, and more cost-effective than conventional methods, providing a powerful means to measure and understand OAM in structured light fields.
Originally Published 2 years ago — by Phys.org
University of Michigan astronomers have used interferometry to capture the most detailed images of the inner region of a planet-forming disk around a young, massive star called V1295 Aquilae. The images show unexpected moving structures and confirm mysterious inner emissions reported in previous studies. The findings raise more questions about the early stages of planet formation and demonstrate the power of interferometry to perform cutting edge science at a fraction of the price of space telescopes.
Originally Published 2 years ago — by SpaceNews
China's Miyin project aims to construct an array of telescopes in deep space to search for habitable planets orbiting other stars. The project envisions sending four light-collecting telescopes and a beam combiner to Sun-Earth Lagrange point 2. The spacecraft will use interferometric techniques to provide high angular resolution mid-infrared observations to directly image and characterize exoplanets around stars up to 65 light-years away. The project is still in the development phase, but current plans map out on-orbit technology demonstrations in 2024, followed by interferometry experiments conducted aboard the Tiangong space station a year later.