Resonant Light-Induced Heating in Hybrid Cavity-Coupled 2D Transition-Metal Dichalcogenides

Abstract

Hybrid structures based on integration of two-dimensional (2D) transition-metal dichalcogenides (TMDCs) with optical resonators have recently earned significant attention. The enhanced interaction of light with 2D materials in such hybrid structures can enable devices such as efficient light-emitting diodes and lasers. However, one of the factors affecting the performance of such devices is the effect of the optically induced heat on the optoelectronic properties of the 2D materials. In this study, we systematically investigate principal roots of heat generation in hybrid cavity-coupled few-atomic-layer-thick 2D TMDC films under optical pumping. The optical resonator exploited here is a Fabry–Perot (FP) resonator, which can enhance the light–MoS2 interaction by a significant factor of 60 at its resonance wavelength. We have combined an accurate theoretical modeling with experimental Raman spectroscopy to determine the roots of heat generation in MoS2 films integrated with FP resonators. Our investigations...