Supercavity lasing - Nature
网页2017年1月12日 · Kodigala et al. 2 report lasing action from a finite-sized optical device called a supercavity (red), the quality factor of which can take finite, but extremely large, values. b, To produce a...
Supercavitation - Wikipedia
网页Supercavitation is the use of a cavitation bubble to reduce skin friction drag on a submerged object and enable high speeds. Applications include torpedoes and propellers, but in theory, the technique could be extended to an entire underwater vessel.
Ultralow-threshold laser using super-bound states in the …
网页2021年7月5日 · Here, we employ the concept of a supercavity mode created by merging symmetry-protected and accidental bound states in the continuum in the momentum space, and realize an efficient laser based on...
High-$Q$ Supercavity Modes in Subwavelength Dielectric Resonators
网页2017年12月13日 · (a) Scattering spectra of a nanorod with ϵ = 80 under the condition of the supercavity mode (m = 0). The supercavity mode occurs at r / l = 0.701 (shown in red). Spectra are relatively shifted by 100 dB.
Polarization-selective modulation of supercavity resonances originating ...
网页2020年11月18日 · The resonances with high Q-factor around the FW-BIC region are termed as supercavity resonances. The dipole–quadrupole strong coupling can be described by a full quantum mechanical Hamiltonian:
On the evolution of supercavity geometry and unsteady behavior …
网页2023年5月15日 · Abstract. To investigate the evolution of supercavity geometry and the unsteady characteristics of the supercavitation flow from the initial generation to full development. A three-dimensional numerical model with the inhomogeneous multiphase model and SST k − ω turbulence model was established.
Supercavity modes in stacked identical Mie-resonant metasurfaces
网页2023年11月2日 · The supercavity mode can be designed by the established theoretical model by overlapping Mie resonant modes with tailor-made Fabry-Pérot modes. The simplified system, with free-space field concentration which can exist in plane as well as out of plane of the metasurfaces, provides for ease …
Supercavity Modes Excited by Bessel-Type Plasmon Polaritons
网页2023年8月31日 · Based on this fundamental a universal and robust approach is proposed to find the high-Q supercavity modes, which arise in the vicinity of the resonance crossing features of two coupled resonant modes in the same radiation channel.
Optical physics: Supercavity lasing - NASA/ADS
网页Optical physics: Supercavity lasing. Rybin, Mikhail. ; Kivshar, Yuri. Light in a laser is confined in the form of standing waves. By engineering such waves, scientists have designed an optical system that enhances this confinement, producing a compact laser that emits a high-quality beam. See Letter p.196.
Observation of Supercavity Modes in Subwavelength Dielectric …
网页Recently, an alternative localization mechanism was proposed allowing the trapping of light in individual subwavelength optical resonators with a high quality factor in the regime of a supercavity mode. Here, the experimental observation of the supercavity modes in subwavelength ceramic resonators in the radio-frequency range is presented.
跳至内容