Study of closed-shell molecular complexes as possible laser media
Study of closed-shell molecular complexes as possible laser media
复制标题
研究闭壳分子复合物作为可能的激光介质
DOI：
10.1109/3.400411
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Lempicki
中科院分区：
文献类型：
--
作者：
C. Koepke;A. Wojtowicz;A. Lempicki
我们已经评估了一系列的蓝绿色发射的分子复合物材料（d/sup 0/电子系统），从他们作为可能的可调谐激光介质的适用性的角度来看。所有这些都揭示了一个非常强的，宽带激发态吸收（ESA），发生在不同配置的状态之间，并定位在与晶场参数10 Dq的能量。ESA强烈重叠的发光光谱。由于ESA的终态的性质，ESA跃迁的高速率可以归因于拉波特选择规则的有效打破，因为在终态构型中配体的%轨道和/或中心离子的p轨道相当大地混合到中心离子的d轨道中，并且归因于在该构型中存在三重态项。我们调查的ESA特性，并比较其截面的受激发射。我们解释所获得的结果通过一个配置坐标模型。指出了今后工作的一些可能途径。>
We have evaluated a series of blue-green emitting molecular-complex materials (d/sup 0/ electronic system) from the point of view of their suitability as possible tunable laser media. All of them reveal a very strong, broad-band excited-state absorption (ESA), occurring between states of different configurations and positioned at the energy related to the crystal field parameter 10 Dq. The ESA strongly overlaps the luminescence spectra. Because of the nature of the terminal state of ESA, the high rate of ESA transitions can be ascribed to the efficient breaking of the Laporte selection rule, because of considerable admixture of % orbitals of ligands and/or p-orbitals of the central ion into the d-orbitals of the central ion in the terminal configuration, and to the existence of triplet terms in this configuration. We survey the ESA characteristics and compare its cross sections to those of stimulated emission. We interpret the obtained results by means of a configuration-coordinate model. Some possible avenues of future work are indicated. >