Continuously tunable laser emission from a wedge-shaped organic microcavity
Continuously tunable laser emission from a wedge-shaped organic microcavity
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DOI：
10.1063/1.2913047
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发表时间：
2008-04-21
影响因子：
4
通讯作者：
Leo, K.
中科院分区：
文献类型：
--
作者：
Schuette, B.;Gothe, H.;Leo, K.
我们提出了一种在595-650 nm范围内具有宽调谐范围的有机微腔激光器，其阈值低至2 nJ/脉冲。活性介质由三（8-羟基喹啉）铝（Alq（3））和4-（二氰基亚甲基）-2-甲基-6-（对二甲氨基苯乙烯基）-4H-吡喃（DCM）的有机复合物嵌入两个分布式布拉格反射器之间组成。DCM的非均匀加宽的发射利用激光通过可调谐法布里-珀罗型干涉仪。通过改变有源层的厚度来实现连续调谐。该器件在客体分子的吸收带中的直接激发下显示出高的光稳定性，因此，允许监测活性介质的光增益谱。(c)2008年美国物理研究所。
We present an organic microcavity laser with wide tunability in the range of 595-650 nm, having a threshold as low as 2 nJ/pulse. The active medium consists of the organic composite tris(8-hydroxy quinoline) aluminum (Alq(3)) and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) embedded in between two distributed Bragg reflectors. The inhomogeneously broadened emission from DCM is exploited for lasing by means of a tunable Fabry-Perot-type interferometer. Continuous tuning is achieved by varying the thickness of the active layer. The device shows a high photostability under direct excitation in the absorption band of the guest molecule, thus, allowing to monitor the optical gain spectrum of the active medium. (c) 2008 American Institute of Physics.