A three-dimensional bicontinuous photonic crystal of a bcc lattice with all-angle negative refraction that can be achieved at optical frequencies by interference lithography is proposed. A numerical simulation of the focusing imaging of a slab of this crystal was performed to verify the property of all-angle negative refraction. The dependence of the negative-refraction frequency range on the threshold of photoresist development and on the dielectric constant is also discussed.
© 2004 Optical Society of America
Xianyu Ao and Sailing He, "Three-dimensional photonic crystal of negative refraction achieved by interference lithography," Opt. Lett. 29, 2542-2544 (2004)