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
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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
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Ultra-fast all-optical 2-to-4 decoder based on a photonic crystal structure
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Ultra-fast all-optical full-adder based on nonlinear photonic crystal resonant cavities
TL;DR: A new photonic crystal-based full-adder for the summation of three bits has been proposed and demonstrates that it is more compact than the previous works and is capable of considering optical processing circuits.
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Holographic Fabrication and Optical Property of Graded Photonic Super-Crystals with a Rectangular Unit Super-Cell
TL;DR: In this article, the spatial light modulator-based pixel-by-pixel phase engineering of the incident laser beam provides a high resolution phase pattern for interference lithography, which provides a flexible design for the graded photonic super-crystals with a different ratio of length over the width of the rectangular unit supercell.
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Octonacci magnetophotonic quasi-crystals
TL;DR: In this article, the optical and magneto-optical spectra of quasi-periodic magnetic-dielectric multilayers composed by Ce:YIG and Si organized in accordance to the Octonacci sequence were theoretically investigated.
References
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Plasmonic quasicrystals with broadband transmission enhancement
Sachin Arvind Kasture,Ajith P. Ravishankar,Venkata Jayasurya Yallapragada,Raj Patil,Nikesh V. Valappil,Gajendra Mulay,Venu Gopal Achanta +6 more
TL;DR: This work demonstrates design and fabrication of large area quasicrystal air hole patterns of π/5 symmetry in metal film in which broadband, polarization and launch angle independent transmission enhancement is observed.
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Digitally tunable holographic lithography using a spatial light modulator as a programmable phase mask
TL;DR: T tunable holographic lithography is studied using an electrically addressable spatial light modulator as a programmable phase mask and a calculation method for the assignment of phases in the laser beams is presented.
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Spatially addressable design of gradient index structures through spatial light modulator based holographic lithography
TL;DR: In this article, an achievable gradient refractive index in bi-continuous holographic structures that are formed through five-beam interference is presented. And the authors further present a theoretic approach for the realization of gradient index devices by engineering the phases of the interfering beams with a pixelated spatial light modulator.
Journal ArticleDOI
Holographic fabrication of graded photonic super-crystals using an integrated spatial light modulator and reflective optical element laser projection system
TL;DR: In this paper, a hybrid laser projection system with a spatial light modulator and a single reflective optical element was proposed for the holographic fabrication of graded photonic super-crystals.
Journal ArticleDOI
Holographically formed three-dimensional Penrose-type photonic quasicrystal through a lab-made single diffractive optical element.
TL;DR: Large-area three-dimensional Penrose-type photonic quasicrystals are fabricated through a holographic lithography method using a lab-made diffractive optical element and a single laser exposure to observe the Laue diffraction pattern from the photonic quasi-crystal.