摘要
Two randomly rough surfaces are fabricated on a crystalline silicon substrate, exhibiting autocorrelation functions (ACFs) distinct from those of other rough surfaces. Such ACFs make surfaces named Bessel's rough surfaces due to the fitting functions. Scattering patterns and reflectance from these surfaces are demonstrated both numerically and experimentally for 405-nm-wavelength light at an oblique angle of incidence. Patterns are dissimilar to those of a planar surface and other commonly-seen rough surfaces. Moreover, the reduced reflectance from Bessel's rough surfaces offers a cost-effective way of absorbing solar energy.