Interferometers as a research area encompass the theoretical, experimental, and technological study of instruments that exploit interference of coherent waves—primarily optical, but also matter, microwave, and gravitational waves—to achieve high-precision measurement and sensing. This field investigates configuration design (e.g., Michelson, Mach–Zehnder, Fabry–Pérot), coherence and stability requirements, noise sources and mitigation, signal extraction techniques, and quantum-limited measurement strategies. Research spans applications in metrology, gravitational-wave detection, inertial sensing, spectroscopy, and fundamental tests of quantum mechanics, often integrating advanced lasers, optical cavities, photonic integration, and quantum optics (squeezed states, entanglement) to enhance sensitivity and resolution.
Current plans for flagship telescopes in the 2040s are focused on answering a simple question: Are we alone? Our best telescopes to date, such as the James Webb Space Telescope (JWST), have given us only tantalizing glimpses ...
Planetary Sciences
Jun 22, 2026
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The Haystack 37m Telescope has been a landmark in radio astronomy and radar studies of the solar system since its first light in 1964. Over the following four decades, it supported NASA's Apollo landings on the moon, made ...
Astronomy
May 20, 2026
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To capture higher-definition and sharper images of cosmological objects, astronomers sometimes combine the data collected by several telescopes. This approach, known as long-baseline interferometry, entails comparing the ...
Earth's atmosphere is an impediment to astronomical observations. Not only is cloudy weather a problem, but temperature fluctuations in the atmosphere mean that ground-based telescopes require sophisticated adaptive optics ...
Astronomy
Nov 5, 2025
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The wavelengths of radio light are so large that you can't capture a high-resolution image with a single dish. To capture an image as sharp as, say, the Hubble telescope, you'd need a radio dish tens of kilometers across. ...
Astronomy
Oct 21, 2025
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The world's most sensitive table-top interferometric system—a miniature version of miles-long gravitational-wave detectors like LIGO—has completed its first science run.
General Physics
Oct 9, 2025
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LIGO, the Laser Interferometer Gravitational-wave Observatory, has been called the most precise ruler in the world for its ability to measure motions more than 10,000 times smaller than the width of a proton. By making these ...
Astronomy
Sep 4, 2025
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In astronomy, larger distances are both a blessing and a curse. They can cause issues like longer communication times, which also requires more powerful equipment, and positioning uncertainty that can affect the outcomes ...
Planetary Sciences
Jul 30, 2025
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Georgia State University's Center for High Angular Resolution Astronomy (CHARA), a six-telescope interferometer, excels at studying stars. It's been observing them for 20 years and has contributed to 276 published papers. ...
Astronomy
Jul 24, 2025
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Interferometers, devices that can modulate aspects of light, play the important role of modulating and switching light signals in fiber-optic communications networks and are frequently used for gas sensing and optical computing.
Optics & Photonics
Mar 25, 2025
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