Platinum Diselenide: Nonlinear Optical Signatures of the Transition from Semiconductor to Semimetal in PtSe2 (Laser Photonics Rev. 13(8)/2019).

Highlights from the article: In article number 1900052, Saifeng Zhang, Jun Wang, and co-workers investigate the superior nonlinear optical performance and ultrafast dynamics of layered PtSe SB 2 sb and signatures of the transition from semiconductor to semimetal. The evolution of nonlinear absorption and carrier dynamics with increasing layer thickness demonstrate the PtSe SB 2 sb 's promising potential in nanophotonic devices, such as in infrared detectors, optical switches, and saturable absorbers.