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CLIC is a linear $e^+e^-$ ($\gamma\gamma$) collider project which uses adrive beam to accelerate the main beam. The drive beam provides RF power foreach corresponding unit of the main linac through energy extracting RFstructures. CLIC has a wide range of center-of-mass energy options from 150 GeVto 3 TeV. The present paper contains optimization of Free Electron Laser (FEL)using one bunch of CLIC drive beam in order to provide polarized lightamplification using appropriate wiggler and luminosity spectrum of$\gamma\gamma$ collider for $E_{cm}$=0.5 TeV. Then amplified laser can beconverted to a polarized high-energy $\gamma$ beam at the Conversion point(CP-prior to electron positron interaction point) in the process of Comptonbackscattering. At the CP a powerful laser pulse (FEL) focused to main linacelectrons (positrons). Here this scheme described and it is show that CLICdrive beam parameters satisfy the requirement of FEL additionally essentialundulator parameters has been defined. Achievable $\gamma\gamma$ luminosity isabove $10^{34}$.

$2\times250$ GeV CLIC $\gamma\gamma$ Collider Based on its Drive Beam FEL