Phase-locked coherent modes in a patterned metal-organic microcavity
Phase-locked coherent modes in a patterned metal-organic microcavity
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DOI：
10.1038/nphoton.2012.49
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发表时间：
2012-05-01
期刊：
影响因子：
35
通讯作者：
Leo, K.
中科院分区：
文献类型：
--
作者：
Brueckner, R.;Zakhidov, A. A.;Leo, K.
有机微腔为研究光与物质的相互作用提供了诱人的前景。为了电激发这些过程，必须集成电极。然而，金属的大吸收特性通常被认为对光学相干性是致命的。考虑到这一点，我们将薄银光栅嵌入有机微腔中，以生成局部腔模式和金属基塔姆等离子体激元的周期性阵列。这些激发态能够跨光栅进行相位耦合。在室温和非谐振泵浦下，我们选择性地刺激同相和异相锁定阵列的相干发射。我们证明光学腔内的吸收金属与相干发射兼容。最重要的是，有机层固有的低残余吸收使得相干性能够在宏观距离上传播，即使在室温下也是如此。我们将金属图案嵌入有机微腔的策略为电驱动有机固态激光器提供了一条可行的途径。
Organic microcavities offer tantalizing prospects for studying the interactions of light and matter. For electrical excitation of these processes, electrodes must be integrated. However, the large absorption properties of metals are generally considered fatal for optical coherence. With this in mind, we embedded a thin silver grating into an organic microcavity to generate periodic arrays of localized cavity modes and metal-based Tamm plasmon polaritons. These excited states are capable of phase coupling across the grating. At room temperature and under non-resonant pumping, we selectively stimulated coherent emission from in- and out-of-phase locked arrays. We show that an absorptive metal inside an optical cavity is compatible with coherent emission. Most importantly, the inherently low residual absorption of the organic layer enables coherence to spread over macroscopic distances, even at room temperature. Our strategy of embedding metal patterns into an organic microcavity yields a viable route towards electrically driven organic solid-state lasers.