Growth, thermal and polarized spectral properties of Er3+-doped Li3Ba2La3(MoO4)8 crystal

✍ Scribed by Mingjun Song; Litong Wang; Meili Zhao; Lizhen Zhang; Guofu Wang

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 748 KB
• Volume: 33
• Category: Article
• ISSN: 0925-3467
• DOI: 10.1016/j.optmat.2010.07.027

✦ Synopsis

8 crystal has been grown by the top seeded solution growth method (TSSG). The principal coefficients of thermal expansion along a, b and c axes were precisely measured to be 1.69 Â 10 À5 , 1.85 Â 10 À5 and 1.96 Â 10 À5 K À1 , respectively. The specific heat value was 0.42 J/g K at 325 K. The polarized spectral properties of Er 3+ :Li 3 Ba 2 La 3 (MoO 4 ) 8 crystal were investigated and the spectroscopic parameters were calculated and analyzed based on the Judd-Ofelt theory. The emission crosssections at 1535 nm were determined to be 10.6 Â 10 À21 cm 2 , 12.0 Â 10 À21 cm 2 , and 11.7 Â 10 À21 cm 2 for E||b, E||D1 and E||D2, respectively. Two up-conversion fluorescence bands around 530 and 550 nm were observed with 977 nm excitation, and the possible up-conversion mechanisms were proposed.