THERMALIZATION EFFECTS BETWEEN UPPER LEVELS OF GREEN FLUORESCENCE IN ER-DOPED SILICA FIBERS
THERMALIZATION EFFECTS BETWEEN UPPER LEVELS OF GREEN FLUORESCENCE IN ER-DOPED SILICA FIBERS
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DOI：
10.1364/ol.19.000990
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发表时间：
1994-07-01
期刊：
影响因子：
3.6
通讯作者：
BAXTER, G
中科院分区：
文献类型：
--
作者：
MAURICE, E;MONNOM, G;BAXTER, G
我们提出了一个光谱研究的绿色荧光所产生的泵浦激发态吸收在800 nm范围内激发的掺铒石英光纤。吸收和发射带选择性地归属于S-4（3/2）和H-2（11/2）能级。在两个激发波长下的荧光响应、温度行为和寿命测量证明了S-4（3/2）和H-2（11/2）能级之间的快速热化。这解释了H-2（11/2）发射的重要部分和高温下荧光强度的增加。
We present a spectroscopic study of the green fluorescence resulting from pump excited-state absorption in Er-doped silica fibers excited in the 800-nm range. The absorption and emission bands are selectively attributed to the S-4(3/2) and H-2(11/2) levels. The fluorescence response at two excitation wavelengths, the temperature behavior, and lifetime measurements demonstrate a fast thermalization between the S-4(3/2) and H-2(11/2) levels. This explains an important part of the H-2(11/2) emission and the increase of the fluorescence intensity at high temperature.