Low threshold, single-mode laser based on individual CdS nanoribbons in dielectric DBR microcavity

It is reported that single-mode, low threshold nanoscale lasers based on CdS nanoribbons sandwiched between two dielectric distributed Bragg reflectors (DBRs). Under optical pumping, the band edge emission of embedded CdS NR can be confined in the DBR microcavity due to the high reflectivity of the DBRs, which results in a low threshold lasing with single mode.274