Two-dimensional photonic quasicrystals by single beam computer-generated holography

Abstract

Recently important efforts have been dedicated to the realization of a new kind of photonic crystals, known as photonic quasicrystals, in which the lack of the translational symmetry is compensated by rotational symmetries not achievable by the conventional periodic crystals. Here we show a novel approach to their fabrication based on the use of a programmable Spatial Light Modulator encoding Computer-Generated Holograms. Using this single beam technique we fabricated Penrose-tiled structures possessing rotational symmetry up to 23-fold, and a two-dimensional Thue-Morse structure, which is an aperiodic structure not achievable by multiple beam holography.

Reconfigurable Optically Induced Quasicrystallographic Three‐Dimensional Complex Nonlinear Photonic Lattice Structures

“…It has been theoretically proposed that PC structures belonging to all fourteen 3D Bravais lattices could be fabricated either by the interference of multiple beams or by the multiple exposure of two beam interference. [15,16] As implemented in the case of periodic PC structures, recently, various optical induction-based fabrication approaches have been adapted to fabricate 2D [17][18][19] as well as 3D [20][21][22][23][24][25] PQCs in different photosensitive materials. In three dimensions, both 3D axial PQCs as well as variants of icosahedral structures have been investigated.…”

Optical fabrication of wavy lattices and photonic lattices with defects in photorefractive crystal by single step projection method

“…The key to our method is the usage of a spatial light modulator (SLM) which can project arbitrarily structural patterns drawn by computer onto a photorefractive crystal to induce the corresponding microstructures. Compared to the previous experiments using SLM, our method is easy to operate without complicated programming, thus reduces the complexity of the experiment [15,26,27]. Wavy lattices and photonic lattice structures with defects are one-step induced inside a LiNbO 3 :Fe photorefractive crystal.…”

A simple configuration for fabrication of 2D and 3D photonic quasicrystals with complex structures

“…Laser holographic lithography has been recently reported to realize PBG materials [11,12]. In principle, multi-beam laser interference is exploited to form holographic patterns in space which subsequently expose a photosensitive medium to form designed patterns.…”