  Domain walls arise in theories where there is spontaneous symmetry breaking
of a discrete symmetry such as $\mathbb{Z}_{N}$ and are a feature of many BSM
models. In this work we consider the possibility of detecting domain walls
through their optical effects and specify three different methods of coupling
domain walls to the photon. We consider the effects of these couplings in the
context of gravitational wave detectors, such as LIGO, and examine the
sensitivity of these experiments to domain wall effects. In cases where
gravitational wave detectors are not sensitive we examine our results in the
context of axion experiments and show how effects of passing domain walls can
be detected at interferometers searching for an axion signal.
