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

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

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cqgra..25k4031s&link_type=abstract

Classical and Quantum Gravity, Volume 25, Issue 11, pp. 114031 (2008).

Physics

Scientific paper

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 (MZIs). 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 that cancels the displacement noise of the mirrors and beam splitters while maintaining gravitational-wave signals. The attained maximum displacement noise suppression was 45 dB.

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