Enhanced light-matter interactions in graphene-covered dielectric magnetic mirrors

Abstract

Enhanced interactions of light with graphene on the surface of a lossless dielectric magnetic mirror (DMM) are studied theoretically and experimentally in the visible range, where the DMM is composed of truncated dielectric photonic crystals (PCs). The absorption of graphene on the DMM was enhanced by about 4-fold for the spectral range within the forbidden gap of PCs over a wide range of incidence angles for both transverse electric and transverse magnetic polarizations compared with that of free-standing graphene. Moreover, the enhanced local electric field on the DMM surface led to much better detection efficiencies of the photocurrent, Raman spectroscopy and enhanced third-harmonic generation of graphene. These results offer a new way to achieve an enhanced interaction of light with graphene and develop new compact graphene-based devices.

Electrically controllable plasmon induced reflectance in hybrid metamaterials

“…[11][12][13]34 On the other hand, the light matter interaction of graphene on top of the reflecting surface is increased fourfold. 38 This enhanced local electric field on a reflecting surface in the presence of graphene can be used for better detection and modulation. [39][40][41][42] Therefore, a plasmon induced reflectance (PIR) will be more promising and can be used for efficient optoelectronic devices.…”

Disorder-immune metasurfaces with constituents exhibiting the anapole mode

“…, especially, for the perfect magnetic mirrors the reflection phase is zero [20,21,59]. Due to the constructive interference, the electric field enhancement at the interfaces makes the magnetic mirrors to be significant for various applications such as molecular fluorescence [19], perfect absorbers [60], subwavelength imaging [15], photocurrent generation and surface enhanced Raman spectroscopy (SERS) [61], and retroreflectors [18].…”

Subwavelength-Cavity High-Gain Circularly Polarized Antenna with Planar Metamaterials

“…Therefore, metamaterial antennas are more advantageous than their conventional counterparts [24,25,36,37]. Metamaterials include double-and single-negative metamaterials (SNMs) [36,38]. SNMs include epsilon-negative metamaterials (ENMs) with negative permittivities and mu-negative metamaterials (MNMs) with negative permeabilities.…”