Arbitrary structuring of two-dimensional photonic crystals by use of phase-only Fourier gratings.
The computer-generated holography technique is applied to the structuring of two-dimensional (2D) photonic crystals with inherently embedded arbitrary defects. The technique uses phase-only Fourier gratings as a generator of spot arrays in the focal plane, such that a single exposure produces a 2D array of focused spots with desired defects or modifications in the lattice structure. We demonstrate several types of large-area 2D lattice structures with square, hexagonal, or hybrid lattices embedded with point and (or) line defects. Scanning the Fourier plane in the depth direction throughout multiphoton polymerization media allows 3D lattices with stacked defect layers to be formed.
Lee
Gwansu
G
Department of Physics, Hanyang University, Songdong, Seoul 133-791, South Korea.
Song
Seok Ho
SH
Oh
Cha-Hwan
CH
Kim
Pill-Soo
PS