@Article{CarvalhoBourTobaAgui:2017:SeChPa,
author = "Carvalho, Natalia C. and Bourhill, J. and Tobar, M. E. and Aguiar,
Odylio Denys de",
affiliation = "{University of Western Australia} and {University of Western
Australia} and {University of Western Australia} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Sensitivity characterisation of a parametric transducer for
gravitational wave detection through optical spring effect",
journal = "Classical and Quantum Gravity",
year = "2017",
volume = "34",
number = "17",
pages = "Article number 175001",
month = "July",
keywords = "gravitational waves, gravitational wave detectors, optomechanics,
microwave.",
abstract = "We present the characterisation of the most recent parametric
transducers designed to enhance the Mario Schenberg gravitational
wave detector sensitivity. The transducer is composed of a
microwave re-entrant cavity that attaches to the gravitational
wave antenna via a rigid spring. It functions as a three-mode
mass-spring system; motion of the spherical antenna couples to a
50 \μm thick membrane, which converts its mechanical motion
into a frequency shift of the cavity resonance. Through the
optical spring effect, the microwave transducer
frequency-displacement sensitivity was measured to be 726 MHz
\μm-1 at 4 K. The spherical antenna detection sensitivity is
determined analytically using the transducer amplification gain
and equivalent displacement noise in the test setup, which are 5.5
× 1011 V m-1 and 1.8 × 1019 m \√Hz-1, respectively.",
doi = "10.1088/1361-6382/aa7fff",
url = "http://dx.doi.org/10.1088/1361-6382/aa7fff",
issn = "0264-9381",
language = "en",
targetfile = "Carvalho_2017_Class._Quantum_Grav._34_175001.pdf",
urlaccessdate = "27 abr. 2024"
}