A low threshold nanocavity in a two-dimensional 12-fold photonic quasicrystal

Ren, Jie; Sun, Xin; Wang, Shuai

doi:10.1016/j.optlastec.2017.10.031

Cited by 12 publications

(4 citation statements)

References 12 publications

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“…The reason is, as mentioned above, close light spots in the latter generate interference so as to destroy self-similarity to some extent. The results also explain to some extent why these PQCs are widely studied and even utilized for devices [94][95][96][97][98][99][100][101][102][103][104][105]. Fig.28 The maximum gap-midgap ratios Δω/ω c of different quasicrystals.…”

Section: Band-gap Of Multi-fold Complex Pqcs[107]mentioning

confidence: 75%

“…Compared to periodic photonic crystals (PCs), PQCs have the following advantages: the low dielectric constant contrast when a complete PBG appears [94][95][96], higher isotropy of PBG [96][97][98]and rich defect modes without introducing defect [99] etc. PQCs have been utilized to design waveguides [97,100], sensors [101], laser microcavities [102], filters [95,103], owing to the band-gap and localized state properties, showing great potential for small size, flexibility and effectiveness, thereby lays the foundation for the development of optical integratedcircuits.…”

Section: On Pbgmentioning

confidence: 99%

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Generalized Dynamics of Soft-Matter Quasicrystals

Tang¹

2017

Springer Series in Materials Science

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This article provides a detailed review on the generalized dynamics of soft-matter quasicrystals developed recent years. Comparing to solid quasicrystals consisted mainly with metallic alloys, soft-matter quasicrystals have been observed in liquid crystals, polymers, colloids, nanoparticles and surfactants, which indicates quite different formation mechanism. Based onLandau-Anderson theory and group representation theory, we have studied the symmetry, symmetry breaking and elementary excitations for the observed and possible soft-matter quasicrystals. We further proposed one more elementary excitation -fluid phonon additional to the phonon and phason for solid quasicrystals, to quantitatively describe the dynamics of soft-matter quasicrystals. The general governing equations and the solutions of the dynamics evolution on the distribution, deformation and motion of the new phase are studied, which reveal quite distinguishing dynamic behaviour with those of conventional fluids and solid quasicrystals. Someapplications are introduced, which show this is an important field of new materials and materials science. 9

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Section: Band-gap Of Multi-fold Complex Pqcs[107]mentioning

confidence: 75%

Section: On Pbgmentioning

confidence: 99%

Generalized Dynamics of Soft-Matter Quasicrystals

Tang¹

2017

Springer Series in Materials Science

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“…Recent research has explored lasing behavior in diverse QPs microcavities, incorporating complex geometries such as 2D Penrose tiling, 1D Fibonacci and Octonacci sequences, defect points, long-range rotational symmetries, and 3D icosahedral structures [208,209,[214][215][216][217][218][219][220][221][222]. These intricate designs have led to significant advancements in lasing performance, characterized by lower thresholds, efficient feedback in various directions, robust localization of optical modes, emission independence at different surface angles, and minimized beam divergence, resulting in distinctive and well-defined lasing patterns.…”

Section: Recent Advance In Qps Microcavity Lasersmentioning

confidence: 99%

Lasers Based on Periodic and Quasiperiodic Planar Feedback Cavities: Designs, Principle, and Potential Applications

Hayat,

Alamgir,

Jin

et al. 2024

PIER M

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Planar feedback micro-nanoscale cavities, shaped by advances in nanofabrication, have revolutionized laser technology, giving rise to chip-scale, low-threshold lasers with wide-ranging applications, spanning from atmospheric investigation to incorporation into central devices such as smartphones and computer chips. The complicated designs of these cavities, shaped by the physics of periodic and quasiperiodic structures, empower efficient manipulation of light-matter interaction and coherent light coupling, minimizing losses. This review thoroughly explores the underlying concepts and crucial parameters of planar feedback microcavities, shedding light on the photophysical behavior of recent gain materials pivotal for realizing optimal lasing properties. The examination extends to photonic crystal bandgap (PhC BG) microcavity lasers, specifically with periodic and quasiperiodic architectures. In-depth assessments probe into the principles and designs of each architecture, exploring features such as wavelength selectivity, tuneability, lasing patterns, and the narrow linewidth characteristics inherent in distributed feedback (DFB) microcavity lasers. The review highlights the intriguing characteristics of non-radiative bound states in the continuum (BIC) within periodic architectures, emphasizing trends toward high-quality factors, low thresholds, and directional and vortex beam lasing. It also explores the nascent field of Quasiperiodic (QP) microcavity lasers, addressing challenges related to disorder in traditional periodic structures. Comparative inquiries offer insights into the strengths and limitations of each architecture, while discussions on challenges and future directions aim to inspire innovation and collaboration in this dynamic field.

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“…Moreover, they exhibit transmission resonances and critical localized states [4]. The peculiar properties of quasi-crystals are strongly useful for the conception of potential applications in different domains [5,6], especially optical communications technology such as optical filter [7][8][9], optical fibers [10,11], microcavities and lasers [12][13][14][15][16], lenses [17], sensors [18,19] etc.…”

Section: Introductionmentioning

confidence: 99%

Scaling Law, Confined and Surface Modes in Photonic Fibonacci Stub Structures: Theory and Experiment

et al. 2020

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We investigate both theoretically and experimentally the properties of electromagnetic waves propagation and localization in periodic and quasi-periodic stub structures of Fibonacci type. Each block constituting the Fibonacci sequence (FS) is composed of an horizontal segment and a vertical stub. The origin of the primary and secondary gaps shown in such systems is discussed. The behaviors and scattering properties of the electromagnetic modes are studied in two geometries, when the FS is inserted horizontally between two semi-infinite waveguides or grafted vertically along a guide. Typical properties of the Fibonacci systems such as the fragmentation of the frequency spectrum, the self-similarity following a scaling law are analyzed and discussed. It is found that certain modes inside these two geometries decrease according to a power law rather than an exponential law and the localization of these modes displays the property of self-similarity around the central gap frequency of the periodic structure where the quasi-periodicity is most effective. Also, the eigenmodes of the FS of different generation order are studied depending on the boundary conditions imposed on its extremities. It is shown that both geometries provide complementary information on the localization of the different modes inside the FS. In particular, in addition to bulk modes, some localized modes induced by both extremities of the system exhibit different behaviors depending on which surface they are localized. The theory is carried out using the Green’s function approach through an analysis of the dispersion relation, transmission coefficient and electric field distribution through such finite structures. The theoretical findings are in good agreement with the experimental results performed by measuring in the radio-frequency range the transmission along a waveguide in which the FS is inserted horizontally or grafted vertically.

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A low threshold nanocavity in a two-dimensional 12-fold photonic quasicrystal

Cited by 12 publications

References 12 publications

Generalized Dynamics of Soft-Matter Quasicrystals

Generalized Dynamics of Soft-Matter Quasicrystals

Lasers Based on Periodic and Quasiperiodic Planar Feedback Cavities: Designs, Principle, and Potential Applications

Scaling Law, Confined and Surface Modes in Photonic Fibonacci Stub Structures: Theory and Experiment

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