Two-dimensional natural hyperbolic materials: from polaritons modulation to applications

Xue

Phys. Chem. Chem. Phys.

et al. 2023

Self Cite

Section: Introductionmentioning

confidence: 95%

Giant photonic spin Hall effect induced by hyperbolic shear polaritons

Xue

Phys. Chem. Chem. Phys.

et al. 2023

Self Cite

“…In particular, the strong resonance caused by inherent excitons in the nonlinear optical response of TMDs can be further used to adjust and enhance SHG, which has aroused great interest. [313][314][315] Recently, excitonpolaritons derived from excitons have also attracted considerable research activity from the perspective of light-matter interaction enhancement for nonlinear nanophotonics. [309,314,[316][317][318][319] The integration scene of 2DLMs and photonic environments can be regarded as the coupling of light and 2DLMs in the hybrid system, [306,320] where the photon modes are resonated with the excited states of 2DLMs.…”

Section: Light-matter Interaction Enhancementmentioning

confidence: 99%

Second Harmonic Generation Control in 2D Layered Materials: Status and Outlook

Huang,

Xiao,

Xia

et al. 2024

Adv Funct Materials

Second harmonic generation (SHG) as an essential nonlinear optical effect, has gradually shifted its research trend toward the integration and miniaturization of photonic and optoelectronic on‐chip devices in recent years. 2D layered materials (2DLMs) open up a new research paradigm of nonlinear optics due to their large second‐order susceptibility, atomically thin structure, and perfect phase‐matching. However, 2DLMs are facing a bottleneck of weak SHG conversion efficiency limit caused by short light–matter interaction lengths at a nanoscale. Moreover, advances in integrated on‐chip SHG devices based on 2DLMs rely on the continuing development of novel strategies with tunable and efficient SHG responses. Here, this review provides a comprehensive overview of recent progress in exploring highly efficient and tunable SHG responses in 2DLMs. Various modulation and enhancement strategies for the SHG response of 2DLMs are extensively studied and systematically discussed, which can be classified into two categories: symmetry breaking and light‐matter interaction enhancement. Moreover, remaining challenges and outlooks toward further extending and realizing the practical applications of 2DLMs in nonlinear on‐chip integrated devices with SHG modulation and enhancement characteristics are discussed.

“…The velocity that divides the nonrelativistic zone and the Cerenkov zone is β = 1/n ′ , which is the speed of light that propagates in the stationary medium. In addition, the reversed transition of the iso-frequency contour from hyperbola to ellipse may be realized when assuming the hyperbolic property for the medium in the frame S ′ , [28][29][30][31][32] seeing the supplementary material (Section A).…”

Section: Electromagnetic Parameters Of Moving Uniaxial Crystal Slabsmentioning

confidence: 99%

Photonic Dirac cone and topological transition in a moving dielectric slab

Pan

Dong

et al. 2023

Chinese Phys. B

In the study, the moving media theory is applied to a photonic confined structure which is a continuous dielectric slab waveguide with the uniaxial anisotropy and without the discrete translational symmetry. The moving effect not only brings about non-reciprocity to the whole photonic band structure in the co-moving and counter-moving directions, but also leads to the topological transition of local degenerate points within the band diagram. We demonstrate through calculation that the type-II Dirac point can be turned into type-I Dirac point when the uniaxial slab is moving over certain speed. Our results provide a new approach to regulate the topology of degeneracy for two-dimensional photonic bands in the continuous translational symmetry condition.