摘要
Herein,we report two new selenite/tellurite bromide compounds,namely,CdPb_(8)(SeO_(3))_(4)Br_(10) and Pb_(3)(TeO_(3))Br_(4).The former crystallized in a centrosymmetric space group,while the latter is a non-centrosymmetric compound.Specifically,CdPb_(8)(SeO_(3))_(4)Br_(10) demonstrates high thermal stability(425℃)and a wide optical transparency window(0.33-6.5μm),while Pb_(3)(TeO_(3))Br_(4) exhibits an second harmonic generation response approximately equivalent to that of KDP,appropriate birefringence(0.095@532 nm and 0.066@1064 nm),wide optical transparency window(0.33-6.5μm)and high thermal stability(522℃).These results indicated that lead tellurite bromides could be promising nonlinear optical material systems in the mid-IR wavelength.
基金
supported by the National Natural Science Foundation of China(Grant No.22031009,22375201,21921001 and 91963105)
the NSF of Fujian Province(Grant No.2023J01216).
