Simplified optical configuration for a sloshing-speedmeter-enhanced gravitational wave detector

Research output: Contribution to journalArticlepeer-review


Colleges, School and Institutes

External organisations

  • The University of Adelaide
  • OzGrav, Australian Research Council Centre of Excellence for Gravitational Wave Discovery


We propose a new optical configuration for an interferometric gravitational wave detector based on the speedmeter concept using a sloshing cavity. Speedmeters provide an inherently better quantum-noise limited sensitivity at low frequencies than the currently used Michelson interferometers. We show that a practical sloshing cavity can be added relatively simply to an existing dual-recycled Michelson interferometer such as Advanced LIGO.

Bibliographic note

6 pages, 6 figures


Original languageEnglish
Article number025007
Pages (from-to)1-10
Number of pages10
JournalClassical and Quantum Gravity
Issue number2
Publication statusPublished - 19 Dec 2019


  • gravitational wave, interferometry, quantum noise