Effect of sequence built on photonic band gap properties of one-dimensional quasi-periodic photonic crystals: Application to Thue-Morse and Double-period structures

Sahel, S.; Amri, R.; Gamra, D.; Lejeune, M.; Benlahsen, M.; Zellama, K.; Bouchriha, H.

doi:10.1016/j.spmi.2017.04.031

Cited by 20 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each sinusoidal wave determines the position and the reflectance amplitude of a forbidden photonic band or photonic stopband. Multiple-band NAA structures have interesting applications such as optical encoding tags, optical sensing, photonics and photovoltaics. ,− However, the average sum of multiple sinusoidal waves and their implementation into anodization processes that are effectively translated into modulations of effective refractive index present some limiting drawbacks. When the number of forbidden bands is increased, the reflectance amplitude of each band is reduced.…”

Section: Introductionmentioning

confidence: 99%

Stacked Nanoporous Anodic Alumina Gradient-Index Filters with Tunable Multispectral Photonic Stopbands as Sensing Platforms

Acosta

Bertó-Roselló

Xifré-Pérez

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The new agreement specifically addresses what authors can do with different versions of their manuscripte.g. use in theses and collections, teaching and training, conference presentations, sharing with colleagues, and posting on websites and repositories. The terms under which these uses can occur are clearly identified to prevent misunderstandings that could jeopardize final publication of a manuscript (Section II, Permitted Uses by Authors).

show abstract

Section: Introductionmentioning

confidence: 99%

Stacked Nanoporous Anodic Alumina Gradient-Index Filters with Tunable Multispectral Photonic Stopbands as Sensing Platforms

Acosta

Bertó-Roselló

Xifré-Pérez

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…However, these structures are usually realized by simple and periodic design, despite the fact that periodic structures are a tiny subset of the entire possible range of multilayer structures. Several studies have reported control of light by such “aperiodic” multilayer structures, − but these results were obtained by numerical simulation. Furthermore, the optimal design of aperiodic multilayered metamaterials with desired thermal emission characteristics has been difficult because the search space, i.e., the number of possible candidates, becomes enormous.…”

Section: Introductionmentioning

confidence: 99%

Ultranarrow-Band Wavelength-Selective Thermal Emission with Aperiodic Multilayered Metamaterials Designed by Bayesian Optimization

et al. 2019

View full text Add to dashboard Cite

We computationally designed an ultranarrow-band wavelength-selective thermal radiator via a materials informatics method alternating between Bayesian optimization and thermal electromagnetic field calculation. For a given target infrared wavelength, the optimal structure was efficiently identified from over 8 billion candidates of multilayers consisting of multiple components (Si, Ge, and SiO 2 ). The resulting optimized structure is an aperiodic multilayered metamaterial exhibiting high and sharp emissivity with a Q-factor of 273. The designed metamaterials were then fabricated, and reasonable experimental realization of the optimal performance was achieved with a Q-factor of 188, which is significantly higher than those of structures empirically designed and fabricated in the past. This is the first demonstration of the experimental realization of metamaterials designed by Bayesian optimization. The results facilitate the machine-learning-based design of metamaterials and advance our understanding of the narrow-band thermal emission mechanism of aperiodic multilayered metamaterials.

show abstract

“…These conditions were obtained when the defects were incorporated in quasi-photonic crystals. [22] In the THz to the far-infrared (FIR) spectral regime, graphene optical conductance-based systems attract many researchers' interests. [23] Graphene, as a centrosymmetric material, exhibits non-linear phenomena such as four-wave mixing (FWM), [24−25] strong optical Kerr nonlinearity, [26] and so on, which allows us to employ graphene in active photonic devices with improved functionality.…”

Section: Introductionmentioning

confidence: 99%

Design of Tunable Devices at Terahertz Frequencies Based on Quasi-Photonic Crystals Incorporated with Graphene

Ghayoor¹,

Keshavarz²

2019

Commun. Theor. Phys.

View full text Add to dashboard Cite

In this study, we present a new theoretical model including Thue-Morse and double-period sequences as quasi-photonic crystals are incorporation with graphene and investigate the transmission properties of the THz waves in both structures using a straightforward computational method. We also consider properties of nonlinear conductivity in addition to surface linear conductivity for graphene. We observe the sharp peaks and proper forbidden bands are created in the range of 0.3 THz to 30 THz. In addition, we find that by considering the nonlinear term of graphene and engineering the structural parameters such as the chemical potential of graphene, number of layers and the incidence wave angle, transmission levels of peaks enhance scientifically and quality factor improve considerably. These results show that it would be possible to design of high-Q tunable filters with multi-stop bands in the THz regime which can reduce the noise associated with THz frequency peaks and increase the number of sharp frequency peaks.

show abstract

Effect of sequence built on photonic band gap properties of one-dimensional quasi-periodic photonic crystals: Application to Thue-Morse and Double-period structures

Cited by 20 publications

References 21 publications

Stacked Nanoporous Anodic Alumina Gradient-Index Filters with Tunable Multispectral Photonic Stopbands as Sensing Platforms

Stacked Nanoporous Anodic Alumina Gradient-Index Filters with Tunable Multispectral Photonic Stopbands as Sensing Platforms

Ultranarrow-Band Wavelength-Selective Thermal Emission with Aperiodic Multilayered Metamaterials Designed by Bayesian Optimization

Design of Tunable Devices at Terahertz Frequencies Based on Quasi-Photonic Crystals Incorporated with Graphene

Contact Info

Product

Resources

About