A two-dimensional (2D) subwavelength nanostructure for antireflection coating is fabricated upon a transparent substrate. Self-assembled 2D colloidal crystals are used as a nanoscale composite material with controlled thickness and low refractive index. The feature size of the structure is ∼105 nm. The structure is used for antireflection coating, and the measured reflectivity of a glass substrate is reduced to 0.3%. Enhanced transmission through the substrate is also observed.
© 2005 Optical Society of America
Yang Zhao, Jinsong Wang, and Guangzhao Mao, "Colloidal subwavelength nanostructures for antireflection optical coatings," Opt. Lett. 30, 1885-1887 (2005)