Figure 3
From: Strong optical absorption of a metallic film to induce a lensing effect in the visible region
For samples with prism angles ranging from 15.5 μrad to 124.0 μrad, the images (FWHM) of the light beam spots are narrowed by a factor (ΔPy/ΔPx) that increases from approximately 1.1 to 2.88 in the x direction with respect to the y direction without the metallic lensing effect.
