发光学报2013，Vol.34Issue(6)：702-710,9.DOI:10.3788/fgxb20133406.0702
Ho3+:LiYF4晶体的中红外发光特性
Mid-infrared Emission Properties of Ho3+ Doped LiYF4 Single Crystals
摘要
Abstract
The Ho3+-doped LiYF4 single crystals were grown by Bridgman method.The axial and transverse absorption spectra of Ho3 + ions in LiYF4 crystals were measured.The Judd-Ofelt theory was applied to calculate the J-O effective intensity parameters Ω2,4,6,spontaneous radiative transition rate,branching ratio,radiative lifetime of σ transition and π transition.IR emission spectra of Ho3 + ∶LiYF4 single crystals were measured under 640 nm wavelength excitation,and the emission band around 2.9,1.2 and 2.0 μm due to 5I6→5I7,5I6→5I8,5I7→5I8 transition were observed.Based on the absorption spectra,the maximum calculated emission cross section emission at 1.2 and 2.05 μm in LiYF4∶ Ho3+ crystal are 0.20 × 10-20 and 0.51 × 10-20 cm2,respectively.In the meantime,the emission lifetimes at 1 191 nm (5I6→5I8) and 2 059 nm (5I7→5I8) were determined to be 2.13and 17.23 ms.The research results indicate that Ho3+∶ LiYF4 crystal is a good candidate for midinfrared laser media.关键词
偏振吸收光谱/LiYF4∶Ho3+晶体/中红外荧光/Jodd-Ofelt理论Key words
polarized absorption spectra/ Ho3 + ∶ LiYF4 single crystal / mid-infrared luminescence/ Jodd-Ofelt theory分类
信息技术与安全科学引用本文复制引用
彭江涛,夏海平,汪沛渊,胡皓阳,唐磊..Ho3+:LiYF4晶体的中红外发光特性[J].发光学报,2013,34(6):702-710,9.基金项目
国家自然科学基金(51272109,50972061,61275180) （51272109,50972061,61275180）
浙江省自然科学基金(R4100364,Z4110072) （R4100364,Z4110072）
宁波市自然科学基金(2012A610115) （2012A610115）
宁波大学王宽诚幸福基金资助项目 （）
