Energy Transfer and Mid-Infrared Luminescence Properties of Tm3+/Dy3+ Codoped Chalcohalide Glasses
ZHANG Peng-jun1, DAI Shi-xun1, 2*, CAO Ying1, PENG Bo2, XU Tie-feng1, NIE Qiu-hua1, ZHANG Xiang-hua1, 3
1. College of Information Science and Engineering, Ningbo University, Ningbo 315211, China 2. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China 3. Laboratoire de Verres et Ceramiques, Université de Rennes I, Rennes, France 35042
Abstract：A series of chalcohalide glasses based on the composition 0.9(Ge25Ga5S70)-0.1CsI doped with the different Tm3+/Dy3+ ions ratio were synthesized by melt-quenching technique. The absorption spectra, and mid-infrared fluorescence of different glass samples under 800 nm laser excitation were measured. The results prove that, Tm3+ is an efficient sensitizer, which can enhance the Dy3+: 2.9 μm fluorescence intensity significantly. A decrease in the intensity of 1.8 μm fluorescence and lifetimes of the Tm3+: 3F4 level occurred with increasing the concentration of Dy3+ ions from 0 to 1 Wt% where Tm3+ concentration was fixed to 0.5 Wt%. Also a wide spectral overlap between Tm3+: 1.8 μm emission and the absorption of Dy3+: 6H15/2→6H11/2 showed that the effective energy transfer between the two rare-earth ions was mainly attributed to the resonance energy from Tm3+: 3F4 to Dy3+: 6H11/2 level.
Key words：Mid-infrared emission;Chalcohalide glasses;Tm3+/Dy3+ codoped;Energy transfer
[1] Schweizer T, Hewak D W, Samson B N, et al. J. Lumin., 1997, 72-74: 419. [2] Heo J, Shin Y B. J. Non-Cryst. Solids, 1996, 196: 162. [3] Tanabe S, Hanada T, Watanabe M, et al. J. Am. Ceram. Soc., 1995, 78(11): 2917. [4] Turnbull D A, Aitken B G, Bishop S G. J. Non-Cryst. Solids, 1999, 244: 260. [5] Schweizer T, Hewak D W, Samson B N, et al. Opt. Lett., 1996, 21(19): 1594. [6] Shin Y B, Heo J. J. Non-Cryst. Solids, 1999, 253(1-3): 23. [7] Wei K, Machewirth D P, Wenzel J, et al. Opt. Lett., 1994, 19: 904. [8] Carter J N, Smart R G, Tropper A C, et al. J. Non-Cryst. Solids, 1992, 140: 10. [9] ZHANG Peng-jun, DAI Shi-xun, PENG Bo, et al(张鹏君，戴世勋，彭 波, 等). Chinese J. Laser(中国激光), 2010, 37(2), 554. [10] McCumber D E. Phys. Rev., 1964, 134(2A): A299. [11] Song J H, Heo J. J. Am. Ceram. Soc., 2004, 87(10): 1903. [12] Choi Y G, Cho D H, Kim K H. J. Non-Cryst. Solids, 2000, 276(1-3): 1. [13] Dexter D L. J. Chem. Phys., 1953, 21(5): 836. [14] Peng B, Izumitani T. Opt. Mater., 1995, 4(6): 797. [15] Marěs J, Jacquier B, Pédrini C, et al. Rev. Phys. Appl., 1987, 22: 145. [16] Yang Z Y, Li B, He F, et al. Non-Cryst. Solids, 2008, 354(12-13): 1198. [17] Jagosich F H, Gomes L, L. Tarelho V G, et al. J. Appl. Phys., 2002, 91(2): 624. [18] Weber M J. Phys. Rev. B, 1971, 4: 2932. [19] Peng B, Izumitani T. Opt. Mater., 1995, 4(6): 701.
