Results 11 to 20 of about 10,414 (210)

Tilt-to-length coupling in LISA Pathfinder: Long-term stability

Physical Review D
The tilt-to-length coupling during the LISA Pathfinder mission has been numerically and analytically modeled for particular time spans. In this work, we investigate the long-term stability of the coupling coefficients of this noise. We show that they drifted slowly (by
M Hueller, A Wittchen, M-S Hartig
exaly   +8 more sources

Vanishing tilt-to-length coupling for a singular case in two-beam laser interferometers with Gaussian beams [PDF]

Applied Optics, 2015
The omnipresent tilt-to-length coupling in two-beam laser interferometers, frequently a nuisance in precision measurements, vanishes for the singular case of two beams with identical parameters and complete detection of both beams without clipping. This effect has been observed numerically and is explained in this manuscript by the cancellation of two ...
Gudrun Wanner, Sönke Schuster, Gerhard Heinzel   +2 more
exaly   +5 more sources

Tilt-to-length coupling metrology in the LISA mission

Optics and Photonics for Advanced Dimensional Metrology III
This paper describes a setup aimed at measuring the so-called Tilt-To-Length (TTL) coupling in the optical benches of the LISA mission. The TTL is the coupling of the angular jitter of any optical setup into the optical path length between its input and output pupils.
Frédéric Cleva
exaly   +5 more sources

Tilt-to-length coupling in LISA—uncertainty and biases

Classical and Quantum Gravity
Abstract The coupling of the angular jitter of the spacecraft and their sub-assemblies with the optical bench and the telescope into the interferometric length readout will be a major noise source in the LISA mission. We refer to this noise as tilt-to-length (TTL) coupling.
M-S Hartig, J Marmor, D George, S Paczkowski, J Sanjuan   +4 more
exaly   +4 more sources

Calculating the precision of tilt-to-length coupling estimation and noise subtraction in LISA using Fisher information

Physical Review D, 2023
Tilt-to-length (TTL) noise from angular jitter in LISA is projected to be the dominant noise source in the milli-Hertz band unless corrected in post-processing. The correction is only possible after removing the overwhelming laser phase noise using time-delay interferometry (TDI).
Guido Mueller, JOSÉ Sanjuan, Daniel George   +2 more
exaly   +4 more sources

Experiment demonstration of tilt-to-length coupling suppression by beam-alignment-mechanism

Classical and Quantum Gravity
Abstract Tilt-to-length (TTL) noise, caused by angular jitter and misalignment, is a major noise source in the inter-satellite interferometer for gravitational wave detection. However, the required level of axis alignment of the optical components is beyond the current state of the art.
Ze-Bing Zhou, Haixing Miao
exaly   +3 more sources

Compact advanced pure tilt actuator for testing tilt-to-length coupling in space-based gravitational wave detection

Optics Express
Tilt-to-length (TTL) coupling, caused by the jitter of test masses or satellites, is a major noise source in space-based gravitational wave detection. Calibrating and suppressing TTL coupling noise at the sub-nanometer level is essential.
Yu-Rong Liang, Hao Yan
exaly   +3 more sources

Tilt-to-length coupling in LISA Pathfinder : Analytical modeling

Physical Review D, 2023
Tilt-to-length coupling was the limiting noise source in LISA Pathfinder between 20 and 200 mHz before subtraction in post-processing. To prevent the adding of sensing noise to the data by the subtraction process, the success of this strategy depended on a previous direct noise reduction by test mass alignment. The exact dependency of the level of tilt-
Marie-Sophie Hartig, Gudrun Wanner
openaire   +3 more sources

Tilt-to-Length Coupling in the GRACE Follow-On Laser Ranging Interferometer [PDF]

Journal of Spacecraft and Rockets, 2020
The Laser Ranging Interferometer onboard the Gravity Recovery and Climate Experiment Follow-On satellites is the first laser interferometer in space measuring satellite-to-satellite distance variat...
Wegener, H., Müller, V., Heinzel, G., Misfeldt, M.   +3 more
openaire   +4 more sources

Thermal, electrical and structural characteristics under different concentrator positions for Fresnel concentrating photovoltaic system

Case Studies in Thermal Engineering, 2023
There are always installation errors in linear Fresnel concentrating photovoltaic (CPV) system that make the system unable to work under the designed conditions. Based on the optical, thermal, electrical, and structural coupling principle, the influences
Shuang-Ying Wu, Shu-Zhen Duan, Lan Xiao
doaj   +1 more source