Searching for Ultralight Dark Matter with Optical Cavities

Andrew A. Geraci, Colin Bradley, Dongfeng Gao, Jonathan Weinstein, Andrei Derevianko

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


We discuss the use of optical cavities as tools to search for dark matter (DM) composed of virialized ultralight fields (VULFs). Such fields could lead to oscillating fundamental constants, resulting in oscillations of the length of rigid bodies. We propose searching for these effects via differential strain measurement of rigid and suspended-mirror cavities. We estimate that more than 2 orders of magnitude of unexplored phase space for VULF DM couplings can be probed at VULF Compton frequencies in the audible range of 0.1-10 kHz.

Original languageEnglish (US)
Article number031304
JournalPhysical review letters
Issue number3
StatePublished - Jul 17 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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