Residual amplitude modulation in interferometric gravitational wave detectors
نویسندگان
چکیده
منابع مشابه
Residual amplitude modulation in interferometric gravitational wave detectors.
The effects of residual amplitude modulation (RAM) in laser interferometers using heterodyne sensing can be substantial and difficult to mitigate. In this work, we analyze the effects of RAM on a complex laser interferometer used for gravitational wave detection. The RAM introduces unwanted offsets in the cavity length signals and thereby shifts the operating point of the optical cavities from ...
متن کاملParallel phase modulation scheme for interferometric gravitational-wave detectors.
Advanced LIGO (aLIGO) requires multiple frequency sidebands to disentangle all of the main interferometer's length signals. This paper presents the results of a risk reduction experiment to produce two sets of frequency sidebands in parallel, avoiding mixed 'sidebands on sidebands'. Two phase modulation frequencies are applied to separate Electro-Optic Modulators (EOMs), with one EOM in each of...
متن کاملRecycling in laser-interferometric gravitational-wave detectors.
Laser interferometers may detect gravitational waves by sensing the strain in space produced by their passage. The resultant change in intensity of an interference fringe must be observable against a background noise due to the statistical fluctuations in the number of detected photons. Optimization of the detector sensitivity thus involves devising an optical system which both maximizes the si...
متن کاملDynamics of Laser Interferometric Gravitational Wave Detectors
This thesis is a study of dynamics of the new laser gravitational-wave detectors. The analysis in the thesis is developed primarily for LIGO (Laser Interferometer Gravitational-Wave Observatory) but can be used for other interferometers such as VIRGO and TAMA. The dynamics of fields in the interferometers are described in terms of difference equations which take into account the light transit t...
متن کاملHuman gravity-gradient noise in interferometric gravitational-wave detectors
Among all forms of routine human activity, the one which produces the strongest gravity-gradient noise in interferometric gravitational-wave detectors ~e.g. LIGO! is the beginning and end of weight transfer from one foot to the other during walking. The beginning and end of weight transfer entail sharp changes ~time scale t;20 msec! in the horizontal jerk ~first time derivative of acceleration!...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 2013
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.31.000081