H. Masuda et al., Photonic band gap in anodic porous alumina with extremely high aspect ratio formed in phosphoric acid solution, JPN J A P 2, 39(10B), 2000, pp. L1039-L1041
Two-dimensional (2D) photonic crystals were fabricated using anodic porous
alumina with a highly ordered air-hole array of triangular lattice with a h
igh aspect ratio of over 200. The transmission properties of the obtained o
rdered air-hole array in the alumina matrix exhibited a stop band in the sp
ectrum which corresponds to the band gap in 2D photonic crystals.