In our research laboratory, we have developed an absorber composed of various materials and structures. This absorber comprised the following layers arranged from top to bottom: a cubic array layer of titanium and silicon dioxide (SiO2), a magnesium fluoride dielectric layer (MgF2), and an aluminum substrate. Previously, we employed finite difference time domain (FDTD) simulations to identify optimal parameters for this structure and subsequently applied them to COMSOL simulations. The optimal parameters determined through FDTD simulations resulted in an average absorptivity of 95.2% within the wavelength range from 400 to 1500 nm. However, when these parameters were applied to COMSOL simulations, the average absorptivity within the same wavelength range decreased to 93.7%. Subsequently, we utilized COMSOL to adjust various parameters in order to identify the optimal ones. Our investigation focused on exploring the impact of different parameters such as material thicknesses, absorber structures, electromagnetic field distributions, and incident angles on the absorptivity. Through this comprehensive analysis, we aimed to refine our understanding of how these parameters affect the absorptivity performance of the structure. This research not only contributes to the optimization of absorber design but also enhances our knowledge of the underlying physical mechanisms governing light absorption in such structures.