论文部分内容阅读
从室温到液氮温度,在 Tb~(3+)活化的单畸钼酸钆体上作了荧光测量,激发源是一个线性、偏振的488nm 氩激光器,得出了晶体不同取上的发射光潜。发射光谱相对于晶体取向稍有各向异性,但强热依赖于激发偏振角。Tb~(3+)→Eu~(3+)的能量转移部分受488nm 激光线的共振吸收的控制。强度在低温明显减弱指出:这一特定激发源的吸收机制是声子感生的。
From room temperature to liquid nitrogen temperature, Tb (3+) activated monodentate molybdenum molybdenum gadolinium body was measured by fluorescence. The excitation source was a linear, polarized 488nm argon laser. latent. The emission spectrum is slightly anisotropic with respect to the crystal orientation, but intense heat depends on the excitation polarization angle. The energy transfer of Tb ~ (3+) → Eu ~ (3+) is controlled by the resonance absorption at 488 nm laser line. The apparent decrease in strength at low temperatures indicates that the absorption mechanism for this particular excitation source is phonon-induced.