A novel signal processing technique using sinusoidal optical frequency modulation of an inexpensive continuous-wave laser diode source is proposed that allows highly linear …
Deep-frequency-modulation interferometry combines optical minimalism with multifringe readout. However, precision is key for applications such as optical gradiometers for satellite …
O Gerberding - Optics express, 2015 - opg.optica.org
Laser interferometry with pm/Hz precision and multi-fringe dynamic range at low frequencies is a core technology to measure the motion of various objects (test masses) in space and …
Low-frequency high-precision laser interferometry is subject to excess laser-frequency-noise coupling via arm-length differences which is commonly mitigated by locking the frequency to …
Experiments for space and ground-based gravitational wave detectors often require a large dynamic range interferometric position readout of test masses with 1 pm/Hz precision over …
P Hu, J Zhu, X Guo, J Tan - Sensors, 2015 - mdpi.com
This paper presents a real-time method to compensate for the variable cyclic error in a homodyne laser interferometer. The parameters describing the quadrature signals of the …
L Hua, X Zhu, S DeWolf, J Lei, Q Zhang… - IEEE Journal of …, 2020 - ieeexplore.ieee.org
This article presents a signal processing method to demodulate the optical interference phase of cascaded individual optical fiber intrinsic Fabry-Perot interferometric (IFPI) sensors …
We present direct differential phase recovery-an open-loop phasemeter topology for differential optical interferometric measurements. The technique aims to remove common …
D Voigt, A Lohde, O Gerberding - Applied Physics Letters, 2023 - pubs.aip.org
Ground-based gravitational wave detectors use laser interferometry to realize ultra-precise displacement measurements between free-floating test masses to detect signals in the …