Optical spectra of Eu2+ ion doped KMgF3 single crystals grown by Bridgman method

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2019,（1）
• 页码范围: 26-30
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11801-019-8100-y

摘要

High-quality KMgF3 single crystal containing 0.5 mol％ europium (Eu) was prepared by an improved Bridgrnan method.X-ray diffraction (XRD),photoluminescence spectra and fluorescence lifetime were measured.The results indicate the reduction of Eu3+ to Eu2+ in the KMgF3 single crystal.Under the excitation of 259 nm,370 nm and 394 nm,the sample has two distinct emissions of Eu2+:4f7→4f7(～363 nm) and 4f65d1→4f7 (～440 nm).The substitution site for Eu ion is confirmed.The optical property investigation result shows that the Eu2+ doped KMgF3 single crystal may be used as potential laser media and related materials for optical devices.