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掺铒碲酸盐玻璃的制备和光谱性能
作者:陈鹤 刘粤惠 周跃芬 戴世勋 姜中宏 
单位:华南理工大学光通信材料研究所 华南理工大学光通信材料研究所 华南理工大学光通信材料研究所 华南理工大学光通信材料研究所 华南理工大学光通信材料研究所 广州 510640  广州 510640  广州 510640  广州 510640 中国科学院上海光学精密机械研究所 上海201800  广州 510640 中国科学院上海光学精密机械研究所 上海201800 
关键词:碲酸盐玻璃  宽带光纤放大器  McCumber理论  受激发射截面  半高宽 
分类号:TQ171
出版年,卷(期):页码:2004,32(2):166-170
DOI:
摘要:
制备了掺铒碲酸盐玻璃80TeO2-10La2O3-10RmOn(RmOn=BaO,Na2O,Li2O),用差热分析方法研究了碲酸盐玻璃的热力学稳定性。应用MeCumber理论计算了Er3+在碲酸盐玻璃中的受激发射截面σemi=9.51×10-21 cm2。利用所测玻璃的吸收光谱,应用Jadd-Ofelt理论计算出碲酸盐玻璃的J-O强度参数,Er3+在玻璃中的自发辐射机率,荧光分支比及跃迁振子强度等光谱参数。从玻璃的荧光光镨测得掺Er3+碲酸盐玻璃的荧光半高峰为75 nm。作为光放大器介质的掺Er3+碲酸盐玻璃的荧光峰半高宽与受激发射截面积值分别为铝硅酸盐玻璃的2.8倍和4.3倍,是一种更为理想的宽带光纤放大器用基质材料。
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Er3+-doped tellurite glass with component 80TeO2- 10La2O3- 10BaO(Na2O, Li2O) were prepared and the thermal stabilities were studied by differential scanning colourimetry (DSC). The stimulated emission cross sections of Er3+in tellurite glass was calculated,σemi = 9. 51 ×10-21 cm2, based on the McCumber theory. According to absorption spectrum, Judd-Ofelt intensity parameters were determined and used to calculate the radiation transition rates, fluorescent branch ratio and radioactive lifetime of Er23+ in tellurite glasses. The FWHM(full width at half maximum) of Er3+-doped tellurite glass measured by fluorescent spectra is 75nm. As the medium of fiber amplifier, the values of FWHM and the stimulated emission cross sections for Er3+-doped tellurite glass are 2. 8 and 4. 3 times respectively than that of aluminate glass. The conclusion indicates that tellurite glass can be used as an ideal glass host for fiber amplifier.
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基金项目:
广东省自然科学基金重点(013013)资助项目
作者简介:
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参考文献:
[1] MORI A. Erbium-doped tellurite glass fiber laser and amplifier [J]. Electron Lett, 1997,33(10) , 863-864. [2] YAMADA M, MORI A, KOBAYASHI K, et al. Gain-flattened tellurite-based EDFA with a flat amplification bandwidth of 76 nm[J]. IEEE Photonics Technol Lett, 1998, 10(9) : 1 244-1 246. [3] MORI A, KOBAYASHI K, YAMADA M, et al. Low noise broadband tellurite-based Er3+-doped fiber amplifiers [J]. Electron Lett. 1998, 34 (9) : 887-888. [4] WANG J S, VOGEL E M, SNITZER E. Tellurite glass: a new candidate for fiber devices[J]. Opt Mater, 1994( 3) : 187-203. [5] JUDD B R. Optical absorption intensities of rare-earth ions [J]. Phys Rev,1962,127(3) :750-761. [6] OFELT G S. Intensities of crystal spectra of rare-earth ions [J]. J Chem Phys ,1962,37(3) .511-520. [7] MCCUMBER D E. Theory of phonon-terminated optical ma-sers[J]. Phys Rev, 1964,134(2A) : A299-A306. [8] ZOU X, IZUMITANI T. Spectroscopic properties and mechanisms of excited state absorption and energy transfer up-con-version for Er3+-doped glasses[J]. J Non-Cryst Solids, 1993, 162:68-80.
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