Spectra characteristics of Er3+ doped NaY(WO4)2 crystal

被引：0
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作者：
Song, Feng
Tan, Hao
Shang, Mei-Ru
Zhang, Guang-Yin
Cheng, Zhen-Xiang
Chen, Huan-Chu
机构：
[1] Photonics Center, Nankai University, Tianjin 300071, China
[2] Institute of Crystal, Shandong University, Jinan 250100, China
来源：
Wuli Xuebao/Acta Physica Sinica | 2002年 / 51卷 / 10期
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摘要：
Absorption spectra, emission spectra and excitation spectra of Er3+ doped NaY(WO4)2 crystal have been measured at room temperature. Such parameters as the intensity parameters, oscillation strength, rate of spontaneous emission, lifetime and integrated emission cross - section have been calculated according to J-O theory and absorption spectra. Upconversion luminescence of the crystal was measured and strong green light was observed, two-photon process for green and red upconversion lights and three-photon process for violet light were studied. From the measured spectra, the mechanism of transitions has been analyzed in detail and the cross relaxation 4G9/2 + 4I11/2 ->2 H11/2 + 4S3/2 and 4G11/2 + 4I9/2 -> 2H11/2 + 2H11/2 (or 4S3/2) were put forward.
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