Demonstration of displacement- and frequency-noise free laser interferometry using bi-directional Mach-Zehnder interferometers

Details Demonstration of displacement- and frequency-noise free laser interferometry using bi-directional Mach-Zehnder interferometers Demonstration of displacement- and frequency-noise free laser interferometry using bi-directional Mach-Zehnder interferometers

2006-08-20

arxiv.org/abs/gr-qc/0608095v2

Phys.Rev.Lett.98:141101,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 5 figures, now on PRL 98, 141101 (2007)

Scientific paper

10.1103/PhysRevLett.98.141101

We have demonstrated displacement- and frequency-noise free laser interferometry (DFI) by partially implementing a recently proposed optical configuration using bi-directional Mach-Zehnder interferometers (MZI). This partial implementation, the minimum necessary to be called DFI, has confirmed the essential feature of DFI: the combination of two MZI signals can be carried out in a way which cancels displacement noise of the mirrors while maintaining gravitational wave signals. The attained maximum displacement noise suppression allowed a simulated-SNR of 45dB.

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