Skip to content
6CCVD Research

The impact of light polarization and the nature of modes in the formation of quasi-bound states in the continuum at near-normal incidence

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-05-25
JournalJournal of Physics D Applied Physics
AuthorsSatwik Prathap N V, Megha Khokhar, Rajesh V. Nair
InstitutionsIndian Institute of Technology Ropar
Citations4

Abstract

Section titled ā€œAbstractā€

Abstract Bound states in the continuum (BIC) is a peculiar resonant mode with an infinite radiative lifetime and quality factor ( Q -factor) embedded within the radiation continuum, which find applications in sensing, lasing, and quantum photonics. While an ideal BIC with an infinite Q -factor can only occur in theory, observing quasi-BIC in realistic samples with finite sizes is possible. However, the robustness of quasi-BIC depends primarily on the trapped electromagnetic modes. Here, we discuss the polarization dependence and the nature of quasi-BIC mode in a two-dimensional array of gallium arsenide (GaAs) scatterers through finite difference time domain simulations and analytical calculations. The calculated angle- and polarization-dependent transmission spectra show quasi-BIC evolution with high Q -factor at near-normal incidence only for transverse magnetic polarization. The calculated total scattering cross-section implies the dominant contribution from electric dipole moments in generating the quasi-BIC. The evolution of quasi-BIC mode is discussed in terms of Mie or Fabry-Perot modes using geometry-dependent transmission and field intensity calculations. The proposed GaAs metasurfaces with quasi-BIC at 638 nm, corresponding to the zero phonon line of nitrogen-vacancy centers in diamond are useful for applications in photonic quantum technologies.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2017 - High-Q supercavity modes in subwavelength dielectric resonators [Crossref]
  2. 2020 - Dielectric resonant metaphotonics [Crossref]
  3. 2021 - All-dielectric metamaterial fabrication techniques [Crossref]
  4. 2020 - High-Q all-dielectric metasurface: super and suppressed optical absorption [Crossref]
  5. 2017 - Printing beyond sRGB color gamut by mimicking silicon nanostructures in free-space [Crossref]
  6. 2017 - All-dielectric dual-color pixel with subwavelength resolution [Crossref]
  7. 2016 - Plasmonic and dielectric metasurfaces: design, fabrication and applications [Crossref]
  8. 2018 - Metal-masked Mie-resonant full-color printing for achieving free-space resolution limit [Crossref]
  9. 2018 - Highly directive hybrid metal-dielectric Yagi-Uda nanoantennas [Crossref]
  10. 2003 - Wavelength tuning of surface plasmon resonance using dielectric layers on silver island films [Crossref]

Reads Similar to This

Compact Design Models of Cryo and Room Temperature Si MOS, GaN, InGaAs, and p-diamond HEMT TeraFETs A Four-Port Ultra-Compact Terahertz Splitting Filter Based on Graphene Nanoribbon Observation of enhanced terahertz emission in two-dimensional metal line arrays on GaAs surfaces