Enhanced two-photon absorption and two-photon luminescence in monolayer MoS2 and WS2 by defect repairing Dai, Xuran ; Zhang, Xiaoyan ; Kislyakov, Ivan M. ; Wang, Lei ; Huang, Jiawei ; Zhang, Saifeng ; Dong, Ningning ; Wang, Jun Abstract Publication: Optics Express Pub Date: May 2019 DOI: 10.1364/OE.27.013744 Bibcode: 2019OExpr..2713744D