Monolayer-molybdenum-disulfide-based nano-optomechanical transistor and tunable nonlinear responses**Project supported by the National Natural Science Foundation of China (Nos. 11404005, 51502005, 61272153, 61572035), the Key Foundation for Young Talents in College of Anhui Province (No. 2013SQRL026ZD), and the Foundation for PhD in Anhui University of Science and Technology.

Abstract

Atomically thin two-dimensional semiconductor nanomaterials have attained considerable attention currently. Here, we present a nano-optomechanical system based on a suspended monolayer molybdenum disulfide (MoS2). The linear and nonlinear coherent optical properties of this system, and the phenomenon of phonon-induced transparency are demonstrated. The transmission of the probe field can be manipulated by the power of a second ‘gating’ (pump) field, which indicates a promising candidate for an optical transistor. We further study the nonlinear effect of the system, and the optical Kerr effect of the monolayer MoS2 resonator can be regulated under different parameter regimes. This scheme proposed here may indicate potential chip-scale applications of monolayer MoS2 resonator in quantum information with the currently popular pump-probe technology.