We consider nonlinear effects in scattering of light by a periodic structure supporting optical bound states in the continuum. In the spectral vicinity of the bound states the scattered electromagnetic field is resonantly enhanced triggering optical bistability. Using coupled mode approach we derive a ...
Geometrical symmetry plays a significant role in implementing robust, symmetry-protected, bound states in the continuum (BICs). However, this benefit is only theoretical in many cases since fabricated samples’ unavoidable imperfections may easily break the stringent geometrical requirements. Here we propo...
摘要 Light is usually confined in photonic structures with a band gap or relatively high refractive index for broad scientific and technical applications. Here, a light confinement mechanism is proposed based on the photonic bound state in the continuum (BIC). In a low-refractive-index waveguide ...
It has been shown that the HCG system can support the optical bound states in the continuum (BICs) [15–18]. BIC plays an important role in determining the characteristics of the radiative high-Q resonance [17]. However, there are fewer reported HCG structures that support dual-band high-...
(b) Corresponding band structure of the waveguide array where the second band already intersects with the spectral continuum of the cladding modes. The gap between the first and second band is minimal at the edge of the Brillouin zone. (c) Bloch oscillations and Zener tunneling in the ...
As the THz region is between the IR and mmW parts of the electromagnetic spectrum the types of components are, on the one hand, similar to optical equipment, for example mirrors and lenses, while, on the other hand, mmW devices, such as antennas or waveg
Oskar LeisinHarald MorgnerTaylor & Francis GroupMolecular PhysicsK. Beckmann, O. Leisin and H. Morgner, Excitation transfer into bound and continuum states investigated by optical and electron spectroscopy, Mol. Phys . 59: 829–43 (1986). ADS...
Excitation transfer into bound and continuum states investigated by optical and electron spectroscopyThe excitation of chlorine Cl2 by He(2 3S), He(2 1S) atoms in comparison to HeI photon impact is investigated by electron and optical spectroscopy. Both types of measurements are performed ...
around bound states in the continuum of two-dimensional periodic structures, for example photonic crystal slabs, to induce Pancharatnam–Berry phases and spin–orbit interaction in the beams. This new class of optical vortex generators operates in momentum space, meaning that the structure is almost ...
Liang, J. Yao, et al.., “Chiral bound states in the continuum in plasmonic metasurfaces,” Laser Photonics Rev., vol. 17, p. 2200597, 2023. https://doi.org/10.1002/lpor.202200597.Search in Google Scholar [7] F. Dong and W. Chu, “Multichannel-independent information encoding with ...