光电子学
材料科学
激光器
光开关
光学
光子学
衍射
交叉相位调制
非线性光学
相位调制
物理
相位噪声
作者
Sk Kalimuddin,Biswajit Das,Nabamita Chakraborty,Madhupriya Samanta,Satyabrata Bera,Arnab Bera,Deep Singha Roy,Suman Kalyan Pradhan,Kalyan Kumar Chattopadhyay,Mintu Mondal
标识
DOI:10.1002/adom.202200791
摘要
Abstract A strong nonlinear optical response of 2D MoSe 2 nanoflakes (NFs) through spatial self‐phase modulation (SSPM) and cross‐phase modulation (XPM) induced by nonlocal coherent light–matter interactions is reported. The coherent interaction of light and MoSe 2 NFs creates the SSPM of laser beams, forming concentric diffraction rings. The nonlinear refractive index ( n 2 ) and third‐order broadband nonlinear optical susceptibility (χ (3) ) of MoSe 2 NFs are determined from the self‐diffraction pattern at different exciting wavelengths of 405, 532, and 671 nm with varying laser intensity. The evolution and deformation of diffraction ring patterns are observed and analyzed by the “wind‐chime” model and thermal effect. By taking advantage of the reverse saturated absorption of 2D SnS 2 NFs compared to MoSe 2 , an all‐optical diode has been designed with MoSe 2 /SnS 2 hybrid structure to demonstrate the nonreciprocal light propagation. Few other optical devices based on MoSe 2 and semiconducting materials such as Bi 2 Se 3 , CuPc, and graphene have been investigated. The all‐optical logic gates and all‐optical information conversion have been demonstrated through the XPM technique using two laser beams. The proposed optical scheme based on MoSe 2 NFs has been demonstrated as a potential candidate for all‐optical nonlinear photonic devices such as all‐optical diodes and all‐optical switches.
科研通智能强力驱动
Strongly Powered by AbleSci AI