Sensitivity of laser gravitational-wave detectors with stable double-pumped optical spring

Details Sensitivity of laser gravitational-wave detectors with stable double-pumped optical spring Sensitivity of laser gravitational-wave detectors with stable double-pumped optical spring

2012-01-30

arxiv.org/abs/1201.6196v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 5 figures, 2 tables

Scientific paper

We analyze the sensitivity of gravitational-wave antenna with stable double optical spring created by two independent pumps. We investigate regime of three close eigen frequencies (roots of characteristic equation) which appears to provide more wide frequency band in which sensitivity of antenna can beat Standard Quantum Limit (SQL) than previously considered regime with two close eigen frequencies. We take into account optical losses and show that they do not degrade sensitivity significantly. We also demonstrate possible application of considered regime to Einstein Telescope.

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