The effect of gain saturation in a gain compensated perfect lens
arXiv:1007.2486 · doi:10.1364/JOSAB.27.001610
Abstract
The transmission of evanescent waves in a gain-compensated perfect lens is discussed. In particular, the impact of gain saturation is included in the analysis, and a method for calculating the fields of such nonlinear systems is developed. Gain compensation clearly improves the resolution; however, a number of nonideal effects arise as a result of gain saturation. The resolution associated with the lens is strongly dependent on the saturation constant of the active medium.
to appear in J. Opt. Soc. Am. B