Hybrid Coupling Mechanism in a System Supporting High Order Diffraction, Plasmonic, and Cavity Resonances

Abstract

The interactions between plasmonic and photonic modes of a cavity-coupled plasmonic crystal are studied in diffraction and diffractionless regimes, which lead us to the understanding of coherent interactions between electron plasma, higher order cavity, and diffraction modes. The strong interaction between plasmonic and photonic modes is shown to enhance as well as suppress surface plasmon resonance based on cavity phase relation. Numerical and analytical approaches are developed to accurately explain the physics of the interactions evident in their characteristic dispersion graphs. Further experimental measurements confirm the theoretical predictions.

Manipulation of Quenching in Nanoantenna–Emitter Systems Enabled by External Detuned Cavities: A Path to Enhance Strong-Coupling

“…Information), showing a potential route to ameliorate the significant nonradiative emission in plasmonic systems that hinders its photonic detection. In addition, we note that F reported by previous hybrid cavity-nanoantenna structures[14][15][16] are about two orders of magnitude lower.The features of detuned FP-antenna hybrids studied in this work are general and potentially observable in previously proposed hybrid systems[27][28][29][30][31][32] by including single emitters,[13][14][15][16] with different cavity geometries[13][14][15][16]18,25,29,33 and nanoantenna structures 7,8. These open new avenues in diverse research areas such as sensing, surface-enhanced Raman scat-…”

High‐Efficiency Broadband Mid‐Infrared Flat Lens

“…[10,11] In contrast, plasmonic nanoantennas [12][13][14][15][16][17] enable abrupt change in phase, amplitude, and polarization of the incident light using subwavelength optical scatterers on a planar surface. [5,23] Going beyond the Abbe-Rayleigh diffraction limit requires the involvement of evanescent fields with large spatial frequency components which is possible by plasmonic nanoantennas, enabling subwavelength resolution capability going beyond the current imaging technologies. [3][4][5] Spatially distributed plasmonic nanoantennas suppress higher diffraction orders and concentrate the incident light beam beyond the Abbe-Rayleigh diffraction limited focal point.…”

“…[19][20][21][22] In addition, possibility of the optical impedance matching with the free space by the patterned plasmonic interface reduces back scattering, leading to higher transmission efficiency. [5,23] Going beyond the Abbe-Rayleigh diffraction limit requires the involvement of evanescent fields with large spatial frequency components which is possible by plasmonic nanoantennas, enabling subwavelength resolution capability going beyond the current imaging technologies. [2,14,22,24,25] Here, we propose and experimentally demonstrate an ultrathin flat lens working in the mid-IR spectral range with geometrically tunable focal length and subwavelength focusing ability.…”

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

“…This phenomenon can be attributed to the excitation of dipole resonance in bricks. Because the silicon layer film has the thickness of less than λ/29, it results in fundamental cavity mode resonance . These resonances can give rise to resonant absorption, leading to field enhancement in silicon layer film at peaks of λ 1 ‐ λ 4 , separately.…”

“…Because the silicon layer film has the thickness of less than λ/29, it results in fundamental cavity mode resonance. [34][35][36] These resonances can give rise to resonant absorption, leading to field enhancement in silicon layer film at peaks of λ 1 -λ 4 , separately. Figure 3 shows a broadband absorber with diamond array of silicon bricks.…”