摘要
Mid-infrared(MIR)wavelength is strategical important band for thermal imaging,remote sensing,free space communication,etc.Recent progresses in integrated mid-infrared photonics on silicon offer an alternative platform for manufacturing low-cost and high-performance MIR system in high volumes.However,light source has always been a grand challenge for integrated photonics and it is even harder to monolithically integrate MIR laser on silicon which could be operated at room temperature.