Focused Laser Differential Interferometry (FLDI) is an innovative, non‐intrusive optical diagnostic tool designed to capture high-resolution density fluctuations within hypersonic flow environments.

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 ...

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 ...

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 ...

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 ...

Self-mixing interferometry exploits the reinjection of a fraction of a laser’s own emission—reflected or scattered from a target—back into its active cavity. This interaction modifies the laser’s ...

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 ...

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 ...

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LISA is a gravity wave observatory that would open an entirely new window in the universe. Using ripples in the fabric of space-time caused by the motion of the densest objects in the universe, LISA ...