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@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 nov. 2020"
}


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