Browsing by Subject "Photodiodes"

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Radiation pressure calibration and test mass reflectivities for LISA Pathfinder

Korsakova, N.; Kaune, B. (Bristol : Institute of Physics Publishing, 2017)

This paper describes a series of experiments which were carried out during the main operations of LISA Pathfinder. These experiments were performed by modulating the power of the measurement and reference beams. In one ...
Tracking Length and Differential-Wavefront-Sensing Signals from Quadrant Photodiodes in Heterodyne Interferometers with Digital Phase-Locked-Loop Readout

Heinzel, Gerhard; Álvarez, Miguel Dovale; Pizzella, Alvise; Brause, Nils; Delgado, Juan José Esteban (College Park, MD : American Physical Society, 2020)

We propose a method to track signals from quadrant photodiodes (QPDs) in heterodyne laser interferometers that employ digital phase-locked loops for phase readout. Instead of separately tracking the four segments from the ...

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