  In this study, the charged Higgs pair production is analyzed for the minimal
extension of the standard model called two-higgs-doublet model. The process
$\gamma\gamma\rightarrow H^+H^-$ is calculated at the tree level for the ILC
and the numerical analysis is presented for various parameters. The production
rate of the charged Higgs boson pair as a function of center-of-mass (CM)
energy and the differential cross section as a function of angle between photon
and positive charged Higgs boson is presented. The cross section gets high at
the low charged Higgs mass and low CM energies. The total integrated cross
section of the process is also calculated at a $e^+e^-$-collider by convoluting
the $\gamma\gamma\rightarrow H^+H^-$ subprocess with the photon luminosity of
the backscattered photons. The total integrated cross section peaks around
$\sqrt{s}=650 \;\text{GeV}$ and have a value of $1.4 \;\text{pb}$ for
$m_{H^\pm}=100\;\text{GeV/c}^2$. Charged Higgs detection is very important sign
for the new physics and the results shows the potential of the ILC for the
search of the new physics signals.
