| Frequency Upconversion Fluorescence Emission of Er^3＋-Doped Oxychloride Germanate Glass |
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| 作者姓名： | 孙洪涛 张丽艳 张军杰 戴世勋 于春雷 胡丽丽 姜中宏 |
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| 作者单位： | [1]ShanghaiInstituteofOptic＇sandFineMechanics,ChineseAcademyofSciences,Shanghai201800／／GraduateSchooloftheChineseAcademyofSciences,Beijing100049 [2]ShanghaiInstituteofOptic＇sandFineMechanics,ChineseAcademyofSciences,Shanghai201800 |
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| 摘 要： | Frequency upconversion fluorescence property of Er^3 -doped oxychloride germanate glass is investigated. Intense green and red emissions centred at 525, 546, and 657nm, corresponding to the transitions ^2H11/2→4I15/2,^4S3/2→^4I15/2, and ^4F9/2→^4I15/2, respectively, were simultaneously observed at room temperature. The quadratic dependence of the 525, 546, and 657nm emissions on excitation power indicates that a two-photon absorption process occurs under 975 nm laser diode (LD) excitation. The Raman spectrum investigation indicates that oxychloride germanate glass has the maximum phonon energy at-805cm^-1. The thermal stability of this oxychloride germanate glass is evaluated by differential scanning calorimetry, and thermal stability factor AT(△T = Tx -Tg) is 187℃. Intense upconversion luminescence and good thermal stability indicate that Er^3 -doped oxychloride germanate glass is a promising upconversion laser material.
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| 关 键 词： | 铒离子掺杂 氯氧化物 锗酸盐玻璃 荧光激发序列 |
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