2001/03/07 by P. Bernard, Ph. Bernard, G. Gemme +2 · 1 citation
Engineering · Physics and Astronomy · #Acoustics #Advanced Frequency and Time Standards #Detector #Electronic engineering #Engineering #Geophysics and Sensor Technology #Gravitational wave #Harmonic #Mechanical and Optical Resonators #Microwave #Modulation (music) #Optics #Parametric statistics #Physics #Quantum mechanics #Sensitivity (control systems) #gr-qc #physics.ins-det
paper · pdf · doi:10.1063/1.1366636
published as Rev.Sci.Instrum. 72 (2001) 2428-2437 · 28 pages, 12 eps figures, ReVteX. \tightenlines command added to reduce number of pages. The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at http://link.aip.org/link/?rsi
arxiv created 2001/03/07 · openalex publication_date 2001/05/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The design and test of a detector of small harmonic displacements is presented. The detector is based on the principle of the parametric conversion of power between the resonant modes of two superconducting coupled microwave cavities. The work is based on the original ideas of Bernard, Pegoraro, Picasso, and Radicati, who, in 1978, suggested that superconducting coupled cavities could be used as sensitive detectors of gravitational waves, and on the work of Reece, Reiner, and Melissinos, who, in 1984, built a detector of this kind. They showed that an harmonic modulation of the cavity length l produced an energy transfer between two modes of the cavity, provided that the frequency of the modulation was equal to the frequency difference of the two modes. They achieved a sensitivity to fractional deformations of δl/l≈10−17 Hz−1/2. We repeated the Reece, Reiner, and Melissinos experiment, and with an improved experimental configuration and better cavity quality, increased the sensitivity to δl/l≈10−20 Hz−1/2. In this article the basic principles of the device are discussed and the experimental technique is explained in detail. Possible future developments, aiming at gravitational waves detection, are also outlined.