  If electroweak symmetry is spontaneously broken by technicolor, there will be
technimesons analogous to the mesons of the ordinary strong interactions. One
of the lightest technimesons is the technieta $\eta'_T$ (the analogue of
the~$\eta'$). In this work we consider the possibility of observing it at a
linear $e^+e^-$ collider operating in the $\gamma\gamma$ mode. Detecting the
process $\gamma\gamma\rightarrow\eta'_T$ allows for the measurement of the
$\eta'_T\gamma\gamma$ anomalous coupling which is in principle sensitive to the
underlying technifermion substructure.
