| Search for a Stochastic Background of 100-MHz GravitationalWaves with Laser Interferometers (2008) | |||||||||||||
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| 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 ～10^{-16} Hz^{-1/2} at 100 MHz. By cross-correlating the outputs of the two interferometers within 1000 seconds, we found h^2 100Ω_gw < 6 ×10^25 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.. PHYSICAL REVIEW LETTERS. v.101, n.10, 2008, p.101101-1-101101-4 | |||||||||||||
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