Giant two-photon absorption in monolayer MoS2
Yuanxin Li, Ningning Dong, Saifeng Zhang, Xiaoyan Zhang, Yanyan Feng, Kangpeng Wang, Long Zhang and Jun Wang
Article first published online: 30 JUN 2015 | DOI: 10.1002/lpor.201500052
Remarkable TPA and two-photon pumped photoluminescence in pristine monolayer MoS2 grown by CVD are demonstrated, which is entirely distinct from the SA response in multilayer in the NIR. The giant TPA coefficient implies that monolayer MoS2 is a potential 2D semiconductor for photonic applications, such as optical limiters, optical beam shapers, etc.