2003/01/15 by T. Briant, M. Cerdonio, L. Conti +4 · 5 citations
Engineering · Mathematics · Physics and Astronomy · #Acoustics #Action (physics) #Broadband #Classical mechanics #Computational physics #Computer science #Detector #Displacement (psychology) #Electronic engineering #Engineering #Experimental and Theoretical Physics Studies #Frequency band #Frequency domain #Geophysics and Sensor Technology #Gravitation #Gravitational wave #Mathematical analysis #Mathematics #Optics #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Resonator #SPHERES #Sensitivity (control systems) #Telecommunications #Thermal #gr-qc
paper · pdf · doi:10.1103/physrevd.67.102005
published as Phys.Rev. D67 (2003) 102005 · 10 pages, 7 figures
arxiv created 2003/01/15 · openalex publication_date 2003/05/22 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the sensitivity limits of a broadband gravitational-wave detector based on dual resonators such as nested spheres. We determine both the thermal and back-action noises when the resonators' displacements are read out with an optomechanical sensor. We analyze the contributions of all mechanical modes, using a new method to deal with the force-displacement transfer functions in the intermediate frequency domain between the two gravitational-wave sensitive modes associated with each resonator. This method gives an accurate estimate of the mechanical response, together with an evaluation of the estimate error. We show that very high sensitivities can be reached on a wide frequency band for realistic parameters in the case of a dual-sphere detector.