Holographic fabrication of graded photonic super-quasi-crystals with multiple-level gradients.
David Lowell,Safaa Hassan,Oliver Sale,Murthada Adewole,Noah Hurley,Usha Philipose,Banglin Chen,Yuankun Lin +7 more
TLDR
This paper presents the holographic fabrication of graded photonic super-quasi-crystals through pixel-by-pixel phase pattern engineering using a spatial light modulator and observed the golden ratio in the diameters of the diffraction rings of the fabricated quasi-crystal, indicating five-fold symmetry.Abstract:
Photonic quasi-crystals and photonic crystals with certain degrees of disorder can have a broadband light–matter interaction. In this paper, we present the holographic fabrication of graded photonic super-quasi-crystals through pixel-by-pixel phase pattern engineering using a spatial light modulator. Using the same phase pattern arranged in a decagon, we have fabricated graded photonic super-quasi-crystals with five-fold symmetry and multiple levels of gradients and graded photonic super-crystals with rectangular unit super-cells, depending on the Fourier filter. Although a certain degree of disorder was incorporated in the quasi-crystals, we still observed the golden ratio in the diameters of the diffraction rings of the fabricated quasi-crystals, indicating five-fold symmetry. Using direct pixel-by-pixel phase engineering, the same laser projection system, consisting of an integrated spatial light modulator and a reflective optical element, can be used for the fabrication of graded photonic super-crystals with various symmetries. The multi-level gradient effects on the optical properties of an organic light-emitting diode were simulated. When the cathode of an organic light-emitting device is patterned in the graded photonic super-crystals, a light extraction efficiency up to 76% in the visible range can be achieved.read more
Citations
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Holographic fabrication of octagon graded photonic supercrystal and potential applications in topological photonics
Oliver Sale,Safaa Hassan,Noah Hurley,Khadijah Alnasser,Usha Philipose,Hualiang Zhang,Yuankun Lin +6 more
TL;DR: In this article, the authors report holographic fabrication of graded photonic super-crystals with eight graded lattice clusters surrounding the central non-gradient lattices through pixel-by-pixel phase engineering in a spatial light modulator.
Journal ArticleDOI
Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal
TL;DR: In this article, the authors studied high light absorption in two devices: a stack of Au-pattern/insulator/Au-film, where the Au pattern was structured in graded photonic super-crystal.
Journal ArticleDOI
Laser Diffraction Zones and Spots from Three-Dimensional Graded Photonic Super-Crystals and Moiré Photonic Crystals
TL;DR: In this paper , the holographic fabrication of three types of 3D graded photonic super-crystals (GPSCs) through nine beam interferences and their characteristic diffraction patterns are merged into large-area diffraction zones.
Journal ArticleDOI
Design and simulation of a compact all-optical 2-to-1 digital multiplexer based on photonic crystal resonant cavity
Mohammad Maleki,Mohammad Soroosh +1 more
Proceedings ArticleDOI
Enhanced light out-coupling in organic light-emitting diodes (OLED) by patterning the cathode in graded photonic super-crystals
TL;DR: In this article, the light extraction efficiency of planar, organic light-emitting diodes where the Al cathode is patterned with the graded photonic super-crystals was computed.
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