Wide-band measurement of mechanical thermal noise using a laser interferometer
作者： Mariko Kajima , Nobuhiro Kusumi , Shigenori Moriwaki , Norikatsu Mio
DOI: 10.1016/S0375-9601(99)00636-2
关键词: Noise generator 、 Quantum noise 、 Physics 、 Optics 、 Y-factor 、 Relative intensity noise 、 Shot noise 、 Noise spectral density 、 Noise (electronics) 、 Noise temperature
摘要: Abstract We have measured the displacement thermal noise of a mechanical cantilever, made phosphor bronze, using laser interferometer. The spectrum agrees well with an estimation based on fluctuation–dissipation theorem mechanical-admittance measurement. frequency range where we could measure was from 50 to 500 Hz; this is important for characterization interferometric gravitational wave detectors.
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