field in the presence of an absorbing polarizable medium. In this case there are mainly two quantization approaches, the phenomenological method [@1]-[@7] and the damped polarization model[@8; @9]. The phenomenological scheme has been formulated on the basis of the fluctuation- dissipation theorem [@9.1]. In this method by adding a fluctuating noise term, that is the noise polarization field, to the classical constitutive equation of the medium, this equation is taken as the definition of the electric polarization operator. Combination of the Maxwell equations and the constitutive equation in the frequency domain, gives the electromagnetic field operators in terms of the noise polarization field and the classical Green tensor. A set of bosonic operators is associated with the noise polarization which their commutation relations are given in agreement with the fluctuation- dissipation theorem. This quantization scheme has been quite successful in describing some electromagnetic phenomena in the presence of a lossy dielectric medium [@10]-[@14]. The phenomenological approach has been extended to a lossy magnetic or anisotropic medium [@15]-[@17]. This formalism has also been generalized to an arbitrary linearly responding medium based on a spatially nonlocal conductivity tensor [@18].\
The damped polarization model to quantize electromagnetic field in a dispersive dielectric medium 