title: Demonstration of displacement- and frequency-noise-free laser interferometry using bidirectional Mach-Zehnder interferometers.
abstract: 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.
authors.affiliation: TAMA project, National Astronomical Observatory of Japan, 2-21-1, Mitaka, Osawa, Tokyo 181-8588 Japan. sato.shuichi@nao.ac.jp
authors.forename: Shuichi
authors.initials: S
authors.lastname: Sato
authors.forename: Keiko
authors.initials: K
authors.lastname: Kokeyama
authors.forename: Robert L
authors.initials: RL
authors.lastname: Ward
authors.forename: Seiji
authors.initials: S
authors.lastname: Kawamura
authors.forename: Yanbei
authors.initials: Y
authors.lastname: Chen
authors.forename: Archana
authors.initials: A
authors.lastname: Pai
authors.forename: Kentaro
authors.initials: K
authors.lastname: Somiya