Fiber-optic thermometer using Cr-doped YAlO3 sensor head
Fiber-optic thermometer using Cr-doped YAlO3 sensor head
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DOI：
10.1063/1.1589582
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发表时间：
2003-07
影响因子：
1.6
通讯作者：
H. Uchiyama;H. Aizawa;T. Katsumata;S. Komuro;T. Morikawa;E. Toba
中科院分区：
文献类型：
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作者：
H. Uchiyama;H. Aizawa;T. Katsumata;S. Komuro;T. Morikawa;E. Toba
基于光致发光 (PL) 寿命的温度依赖性，Cr 掺杂 YAlO3 荧光粉晶体已生长并表征，可用于光纤温度计。在用发光二极管以 λ=520 nm 激发后，从晶体中观察到 PL 峰值在 λ=735 nm 处。与红宝石 (τ=4.2 ms) 和尖晶石 (τ=8.0 ms) 相比，Cr 掺杂 YAlO3 在室温下观察到较长的 PL 寿命 (τ=43.14 ms)。 Cr掺杂YAlO3的温度系数(-0.075 ms/K)也大于红宝石(-0.010 ms/K)或尖晶石(-0.037 ms/K)。 YAlO3 被认为是光纤温度计的敏感传感器头材料。
Cr-doped YAlO3 phosphor crystals have been grown and characterized for applications in fiber-optic thermometers based on the temperature dependence of the photoluminescence (PL) lifetime. PL peaking at λ=735 nm is observed from the crystals following an excitation by a light-emitting diode at λ=520 nm. Long PL lifetime (τ=43.14 ms) is observed from Cr-doped YAlO3 at room temperature as compared with those of ruby (τ=4.2 ms) and spinel (τ=8.0 ms). The temperature coefficient (−0.075 ms/K) of Cr-doped YAlO3 is also larger than those of ruby (−0.010 ms/K) or spinel (−0.037 ms/K). YAlO3 is considered to be a sensitive sensor head material for fiber-optics thermometers.