Construction of photorefractive photonic quasicrystal microstructures by twisted square lattices

Abstract

A convenient method to fabricate two-dimensional photonic quasicrystal microstructures was experimentally demonstrated by using a rotatable four-wedge prism. Two-dimensional eightfold symmetric quasicrystal microstructures are formed by two groups of twisted square lattices in a photorefractive crystal. The experimental devices of this method are simple and stable without complicated optical adjustment equipment. Optical-induced quasicrystal microstructures are analyzed and verified by magnified imaging and far-field diffraction pattern imaging. The method can be extended to fabricate more complex quasicrystal and moiré lattice microstructures. We numerically demonstrate that this method can be used to fabricate other complex photonic microstructures by using different multi-wedge prisms and adjusting the rotation angle properly.

Holographic Fabrication of 3D Moiré Photonic Crystals Using Circularly Polarized Laser Beams and a Spatial Light Modulator

“…These phase patterns displayed in the SLM can modulate the phase and amplitude of incident light with exceptional spatial precision [ 2 , 13 , 14 , 15 ]. SLM-based holographic lithography has significantly reduced optical setup complexity and demonstrated capability to fabricate two-dimensional (2D) photonic crystals with desired defects [ 16 , 17 , 18 , 19 ], quasi-photonic crystals [ 20 , 21 ], graded photonic crystals [ 22 , 23 , 24 , 25 ], and moiré photonic crystals with unit super-cells in square [ 26 , 27 , 28 ], rectangular [ 29 ], and triangular [ 26 ] symmetries, together with other methods [ 30 , 31 , 32 ].…”

The evolution of the solitons in periodic photonic moiré lattices controlled by rotation angle with saturable self-focusing nonlinearity media

“…In addition, using the characteristic that the linear superposition of the flat band mode is still localization, we can get localization state and then realize image non-diffraction transmission [8][9][10][11][12]. The research on light localization in the quasi-periodic (not aperiodic) photonic lattice has also received extensive attention [13,14]. This solid structure between crystalline and amorphous solids exhibits long-range order.…”

Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal

“…The twisted bilayer photonic crystal consists of two layers of identical photonic crystal stacked into moiré patterns [19,[22][23][24] that also revealed magic-angle photonic flat bands with a non-Anderson-type localization [23]. Several research groups have generated twisted photonic crystals in photorefractive crystals with a shallow refractive index modulation and have observed the localization and delocalization of light waves [25][26][27][28][29][30][31].…”