Bloch Surface Waves for MoS2 Emission Coupling and Polariton Systems

Abstract

Due to their extraordinary quality factor and extreme sensitivity to surface perturbations, Bloch surface waves (BSW) have been widely investigated for sensing applications so far. Over the last few years, on-chip control of optical signals through BSW has experienced a rapidly-expanding interest in the scientific community, attesting to BSW's position at the forefront towards on-chip optical operations. The backbone of on-chip optical devices requires the choice of integrated optical sources with peculiar optic/optoelectronic properties, the efficient in-plane propagation of the optical signal and the possibility to dynamic manipulate the signal through optical or electrical driving. In this paper, we discuss our approach in addressing these requirements. Regarding the optical source integration, we demonstrate the possibility to couple the MoS 2 mono-and bi-layers emission-when integrated on top of a 1D photonic crystal-to a BSW. Afterward, we review our results on BSW-based polariton systems (BSWP). We show that the BSWPs combine long-range propagation with energy tuning of their dispersion through polariton-polariton interactions, paving the way for logic operations.

Two-Dimensional Photonic Devices based on Bloch Surface Waves with One-Dimensional Grooves

“…These grooves can also works as the polarization rotator for TM-BSW and TE-BSW. The conversion between these two BSWs provides a simple method to tune the polarization and electric field distributions of the two-dimensional waves, which may has potential applications in molecular sensing or imaging, and also will provide opportunities in exploring the interactions between two-dimensional waves and the hotly investigated two-dimensional materials [54]. The reason is that both molecules and two-dimensional materials may be sensitive to the polarization of the illumination surface waves.…”

Design of Surface Plasmon Nanolaser Based on MoS2

“…MoS 2 belongs to the hexagonal crystal system. It has a graphene-like structure, a large band gap [42,43], more excellent photoelectric properties than MgF 2 and SiO 2 , high electron mobility, and good thermal stability, and it can store energy, reducing energy loss as a result. Figure 4b, respectively.…”

Microcavity exciton polaritons at room temperature

“…At the state of the art, OSC-based microcavities present short lifetimes and the rigid microcavity design limits the group velocity, thus preventing suitable in-plane propagation. In this respect, high group velocity lossless modes, such as the Bloch surface wave (BSW), have been proposed to maximize the propagation properties of organic polaritons [280][281][282][283][284] . Remarkably, by strongly coupling a thermally evaporated layer of Lumogen F Red with the BSW, it has been demonstrated that polaritons are able to propagate up to 100 μm (X ≈ 15%).…”