Search for a Stochastic Background of 100-MHz Gravitational Waves with Laser Interferometers

2008/03/31 by T. Akutsu, Tomotada Akutsu, Seiji Kawamura +15
Earth and Planetary Sciences · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #gr-qc

paper · pdf · doi:10.1103/physrevlett.101.101101

published as Phys.Rev.Lett.101:101101,2008 · Accepted by Phys.Rev.Lett.; 10 pages, 4 figures

arxiv created 2008/08/09 · openalex publication_date 2008/09/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This Letter reports the results of a search for a stochastic background of gravitational waves (GW) at 100 MHz by laser interferometry. We have developed a GW detector, which is a pair of 75-cm baseline synchronous recycling (resonant recycling) interferometers. Each interferometer has a strain sensitivity of \ensuremath∼10^\ensuremath-16 Hz^\ensuremath-1/2 at 100 MHz. By cross-correlating the outputs of the two interferometers within 1000 seconds, we found h₁₀₀²\ensuremathΩ_gw<6\ifmmode×\else\texttimes\fi10²⁵ to be an upper limit on the energy density spectrum of the GW background in a 2-kHz bandwidth around 100 MHz, where a flat spectrum is assumed.

Citations

• Laser phase and frequency stabilization using an optical resonator
• Laser-interferometric detectors for gravitational wave backgrounds at 100 MHz: Detector design and sensitivity