Heo J, Shin Y B, Jang J N
Appl Opt. 1995 Jul 20;34(21):4284-9. doi: 10.1364/AO.34.004284.
Tm(3+)-doped heavy metal oxide glasses in the PbO-Bi(2)O(3)-Ga(2)O(3) system were prepared, and their emission characteristics were examined. Three emission bands at the infrared wavelength region were observed, at 1.46, 1.79, and 2.36 µm, which are associated with the (3)H(4) ? (3)F(4), (3)F(4) ? (3)H(6), and (3)H(4) ? (3)H(5), transitions, respectively. Measured fluorescence lifetimes for the first two transitions were 0.160 and 1.035 ms, respectively. Oscillator strengths and intensity parameters suggest that the ionicity of Tm-Obonds in the glass is higher when compared with those in other oxide glass hosts. Higher radiative transition probabilities of the three infrared emissions than those calculated for other glasses appear to provide potentials for future laser applications.
制备了PbO-Bi₂O₃-Ga₂O₃体系中掺Tm³⁺的重金属氧化物玻璃，并对其发光特性进行了研究。在红外波长区域观察到三个发射带，分别位于1.46、1.79和2.36 µm，它们分别与³H₄→³F₄、³F₄→³H₆和³H₄→³H₅跃迁相关。前两个跃迁的测量荧光寿命分别为0.160和1.035 ms。振子强度和强度参数表明，与其他氧化物玻璃基质相比，玻璃中Tm-O键的离子性更高。这三种红外发射的辐射跃迁概率高于为其他玻璃计算的值，这似乎为未来的激光应用提供了潜力。
