Add time:08/01/2019         Source:sciencedirect.com

The extraordinary ultrafast tunable saturable absorption properties of metal complexes M(PAAL)2 (M = Co, Ni, Cu, Zn) containing redox-active 1-(2-pyridylazo)-2-acenaphthequinol ligands (PAAL) were investigated by Z-scan and pump-probe system. The obtained third-order nonlinear optical (NLO) absorption and refraction coefficient of each metal complex reach ∼10−2 cm/GW and ∼10−6 cm2/GW at 510 nm wavelength, respectively. Meanwhile, an ultrafast carrier relaxation process of approximately (200 ± 50) fs is observed for all of them. Furthermore, we found that the third-order nonlinear absorption coefficient of M(PAAL)2 is proportional to the central metal proton number. All the NLO properties indicate that those metal complexes posses potential applications for fabricating photonic devices.

We also recommend Trading Suppliers and Manufacturers of 2-(2-PYRIDYLAZO)-1-NAPHTHOL (cas 10335-31-6). Pls Click Website Link as below: cas 10335-31-6 suppliers