Ferroelectric Photonic Crystals from Anodic Aluminum Oxide Filled with Sodium Nitrite.

One-dimensional ferroelectric photonic crystals have been produced by filling porous anodic aluminum oxide with sodium nitrite. Introducing sodium nitrite into the pores of the photonic crystals has been shown to cause a 40-nm bathochromic shift in the spectral position of their bandgap. The results of this study demonstrate the feasibility of using aluminum oxide-based composite photonic crystals as narrow-band selective mirrors. [ABSTRACT FROM AUTHOR]