Results 11 to 20 of about 88,044 (260)

The Hunt for Environmental Noise in Virgo during the Third Observing Run

open access: yesGalaxies, 2020
The first twenty years of operation of gravitational-wave interferometers have shown that these detectors are affected by physical disturbances from the surrounding environment. These are seismic, acoustic, or electromagnetic disturbances that are mainly
Irene Fiori   +19 more
doaj   +1 more source

An accurate and robust metrological network for coherent optical frequency dissemination

open access: yesNew Journal of Physics, 2021
We introduce multi-branch repeater laser stations (MLSs) for the dissemination of an ultra-stable signal from one point to multiple users and the simultaneous evaluation of the stability and accuracy of multiple links.
Etienne Cantin   +5 more
doaj   +1 more source

Steel Beam Compressive Strain Sensor Using Single-Mode-Multimode-Single-Mode Fiber Structure

open access: yesIEEE Photonics Journal, 2016
A steel beam compressive strain sensor using single-mode-multimode-single-mode (SMS) fiber structure is demonstrated. Parallel measurements are made using an electrical resistance (ER) strain gauge along with the SMS to sense the compressive strain on ...
S. E. F. Masnan   +6 more
doaj   +1 more source

The error of transferring the size of a unit of length – a meter in the nanometer range using the nanomeasuring machine

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
The paper describes the principle of measuring linear dimensions using a nano-measuring machine (NMM), which implements the method of measuring three coordinate axes in the range of 25X25X5 mm3.
A. A. Bagdun, V. L. Solomakho
doaj   +1 more source

Optical Inclinometer Based on a LPG-Taper Series Configuration

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
This article presents the development of an inclinometer device based on a Mach-Zehnder interferometer considering the effects caused by temperature variations. It was demonstrated the operation of a LPG-taper system for angle measurements. The practical
Renato Luiz Faraco Filho   +3 more
doaj   +1 more source

The ST7 interferometer [PDF]

open access: yesClassical and Quantum Gravity, 2004
11 pages, 5 figures including 1 photo, for special issue of "Classical and Quantum Gravity," proceedings of Amaldi ...
Spero, Robert, Kuhnert, Andreas
openaire   +2 more sources

Phase Feedback Active Stabilisation Of A Multiplexed Fibre Interferometer [PDF]

open access: yes
Current optical technologies for surface measurement such as white light scanning interferometry (WLSI) can produce sub-nanometric resolution areal height information.
Martin, Haydn, Jiang, Xiang
core   +4 more sources

Two - mirror resonator as a high resolution length –sensing interferometer [PDF]

open access: yesKirkuk Journal of Science, 2011
Same basic properties of resonators from a wave – optical and from a ray resonator were investigated. These properties play a pivoted role in determining both the spectral properties of optical resonators and the behavior of rays inside such resonators ...
Suran D. Yaseen
doaj   +1 more source

Advanced research directions in gravitational wave detectors

open access: yesФизика волновых процессов и радиотехнические системы, 2021
The general principles of gravitational waves detection are considered in this paper. Current gravitational wave detectors represent modernized Michelson interferometer – LIGO-detector.
Ivan P. Ohrymenko   +2 more
doaj   +1 more source

Optical coherence tomography with a Fizeau interferometer configuration [PDF]

open access: yes, 2005
We report the investigation of a Fizeau interferometer-based OCT system. A secondary processing interferometer is necessary in this configuration, to compensate the optical path difference formed in the Fizeau interferometer between the end of the ...
H. D. Ford   +7 more
core   +1 more source

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