Kentaro Somiya et al 2007 J. Phys.: Conf. Ser. 66 012053 doi:10.1088/1742-6596/66/1/012053
Kentaro Somiya1, Keisuke Goda2, Yanbei Chen1 and Eugeniy E Mikhailov3
Show affiliationsInterferometers with kilometer-scale arms have been built for gravitational-wave detections on the ground; ones with much longer arms are being planned for space-based detection. One fundamental motivation for long baseline interferometry is from displacement noise. In general, the longer the arm length L, the larger the motion the gravitational-wave induces on the test masses, until L becomes comparable to the gravitational wavelength. Recently, schemes have been invented, in which displacement noise can be evaded by employing differences between the influence of test-mass motions and that of gravitational waves on light propagation. However, in these schemes, such differences only becomes significant when Lapproaches the gravitational wavelength. In this paper, we explore a use of artificial time delay in displacement-noise-free interferometers, which will shift the frequency band of the effect being significant and may improve their shot-noise-limited sensitivity at low frequencies.
04.80.Nn Gravitational wave detectors and experiments
Issue 1 (2007)
Kentaro Somiya et al 2007 J. Phys.: Conf. Ser. 66 012053
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