Poole, Z and Xu, D and Chen, KP and Olvera, I and Ohlinger, K and Lin, Y
(2007)
Holographic fabrication of three-dimensional orthorhombic and tetragonal photonic crystal templates using a diffractive optical element.
Applied Physics Letters, 91 (25).
ISSN 0003-6951
Abstract
We report the fabrication of both orthorhombic and tetragonal photonic crystal templates using a phase mask technique. Three-dimensional photonic crystal structures were formed by a double exposure of SU8 to three-beam interference patterns generated by a phase mask. Lattice structures and photonic band gap can be controlled by rotational angles of the phase mask between two exposures. Band gap computation predicts that photonic crystal structures with the optimized band gap can be realized when the rotational angle is set between 50° and 70°. A photonic crystal template with 60° phase mask rotation was fabricated, showing improved lattice structures required for the band gap opening. © 2007 American Institute of Physics.
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