000261761 001__ 261761
000261761 005__ 20181221182138.0
000261761 022__ $$a0253-6102
000261761 022__ $$a1572-9494
000261761 02470 $$a000445114600016$$2isi
000261761 0247_ $$a10.1088/0253-6102/70/3/344$$2doi
000261761 037__ $$aARTICLE
000261761 245__ $$aThird-Order Optical Nonlinearity in Two-Dimensional Transition Metal Dichalcogenides
000261761 269__ $$a2018-09-01
000261761 260__ $$c2018-09-01
000261761 336__ $$aJournal Articles
000261761 520__ $$aWe present a detailed calculation of the linear and nonlinear optical response of four types of monolayer twodimensional (2D) transition-metal dichalcogenides (TMDCs), having the formula MX2 with M = Mo, W and X = S, Se. The calculations are based on 6-band tight-binding model of TMDCs, and then performing a semi-classical perturbation analysis of response functions. We numerically calculate the linear chi((1))(mu nu) (-omega;omega) and nonlinear surface susceptibility tensors chi mu nu zeta eta((3)) (-omega(Sigma);omega(r),omega(s),omega(t)) with omega(Sigma) = omega(r)+ omega(s) +omega(t) . Both non-degenerate and degenerate cases are studied for thirdharmonic generation and nonlinear refractive index, respectively. Computational results obtained with no external fitting parameters are discussed regarding two recent reported experiments on MoS2 , and thus we can confirm the extraordinarily strong optical nonlinearity of TMDCs. As a possible application, we demonstrate generation of a pi/4-rotated squeezed state by means of nonlinear response of TMDCs, in a silica micro-disk resonator covered with the 2D material. Our proposed method will enable accurate calculations of nonlinear optical response, such as four-wave mixing and highharmonic generation in 2D materials and their heterostructures, thus enabling study of novel functionalities of 2D photonic integrated circuits.
000261761 650__ $$aPhysics, Multidisciplinary
000261761 650__ $$aPhysics
000261761 6531_ $$a2d materials
000261761 6531_ $$anonlinear optics
000261761 6531_ $$atransition metal dichalcogenides
000261761 6531_ $$aquantum optics
000261761 6531_ $$aminimum-uncertainty packets
000261761 6531_ $$aquantum-noise reduction
000261761 6531_ $$a2-photon absorption
000261761 6531_ $$asqueezed states
000261761 6531_ $$asingle-layer
000261761 6531_ $$aconducting interfaces
000261761 6531_ $$aharmonic-generation
000261761 6531_ $$aequivalence classes
000261761 6531_ $$aroom-temperature
000261761 6531_ $$amonolayer wse2
000261761 700__ $$aKhorasani, Sina
000261761 773__ $$q344-360$$k3$$j70$$tCommunications in Theoretical Physics
000261761 8560_ $$fbeatrice.marselli@epfl.ch
000261761 909C0 $$0252557$$pIPHYS$$xU13149
000261761 909CO $$particle$$ooai:infoscience.epfl.ch:261761$$pSB
000261761 961__ $$afantin.reichler@epfl.ch
000261761 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000261761 980__ $$aARTICLE
000261761 981__ $$aoverwrite