  We study single charged Higgs boson production in photon-photon collision as
a probe of the new dynamics of Higgs interactions. This is particularly
important when the mass ($M_{H^\pm}$) of charged Higgs bosons ($H^{\pm}$) is
relatively heavy and above the kinematic limit of the pair production
($M_{H^\pm} > \sqrt{s}/2$). We analyze the cross sections of single charged
Higgs boson production from the photon-photon fusion processes,
$\gamma\gamma\to \tau \bar \nu H^+$ and $\gamma\gamma\to b \bar c H^+$, as
motivated by the minimal supersymmetric standard model and the dynamical
Topcolor model. We find that the cross sections at such a $\gamma\gamma$
collider can be sufficiently large even for $M_{H^\pm} > \sqrt{s}/2$, and is
typically one to two orders of magnitude higher than that at its parent
$e^-e^+$ collider. We further demonstrate that the polarized photon beams can
provide an important means to determine the chirality structure of Higgs Yukawa
interactions with the fermions.

High Energy Physics - Phenomenology;High Energy Physics - Experiment