The Moon can fill a critical frequency gap that remains out of reach for both ground and space-based observatories.

When we think of physics experiments, we tend to envision cavernous rooms filled with things like optical benches, huge coils in vacuum chambers, and rack after rack of amplifiers and data acquisition ...

Laser interferometry has emerged as a leading non‐contact method for the precision measurement of gear geometries. By utilising the interference of coherent light, these systems can detect minute ...

Purdue faculty dedicate countless hours to exploring the frontiers of their respective fields, pushing the boundaries of knowledge and contributing to the ever-evolving landscape of academia. To ...

Laser self-mixing interferometry (SMI) harnesses the phenomenon of optical feedback by reinjecting a fraction of a laser’s output back into its cavity. This reinjection leads to an interference effect ...

The Laser Interferometer Gravitational Wave Observatory (LIGO) detects the ripples in space-time by using a device called laser interferometer, in which the time it takes light to travel between ...

Antonio García Marín and colleagues from the Albert Einstein Institute and University of Hanover describe the role that laser interferometry will play in the LISA and LISA Pathfinder missions (J. Phys ...

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The European Space Agency (ESA) has launched the first payload of a mission designed to test optical hardware for detecting gravitational waves. The LISA Pathfinder mission, which blasted off from ...

Looking like a scene out of "Star Wars," this image shows the ESO's Very Large Telescope Interferometer (VLTI) beaming four ...

A lot of what I write is about measurement, not because I’m in love with calipers, but because the cutting edge of physics is at the limit of what we can measure. That means that when you want to ...