2006/08/31 by Shuichi Sato, Seiji Kawamura, K. Kokeyama +7 · 1 citation
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Geophysics and Sensor Technology #Pulsars and Gravitational Waves Research #astro-ph #gr-qc
paper · pdf · doi:10.1103/physrevlett.98.141101
published as Phys.Rev.Lett.98:141101,2007 · 5 pages, 5 figures, now on PRL 98, 141101 (2007)
openalex publication_date 2007/04/02 · arxiv created 2007/04/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have demonstrated displacement- and frequency-noise-free laser interferometry (DFI) by partially implementing a recently proposed optical configuration using bidirectional 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 displacement noise of the mirrors while maintaining gravitational-wave signals. The attained maximum displacement-noise suppression was 45 dB.