23 September 2016 Improvement of amplified spontaneous emission performance in organic waveguides
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Metal film is an essential part of the electrically pumped organic semiconductor lasers. But the large loss is the most important factor restricting the electrical pumping. In this paper, we investigate optically pumped amplified spontaneous emission (ASE) in the presence of metal films. The ASE threshold of device with metallic film is reduced by 2.5 times in comparison with that of the metal-free devices. The SiO2 space layer with optimizing thickness between gain media and metal film can effectively prevent absorption loss but also provides a proper waveguide effect. Furthermore, the metal film can prevent the light leaking to the substrate and reflect the lights back into the media, which increases the intensity of pumping and emission again.
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Qianqian Du, Qianqian Du, Wenjun Wang, Wenjun Wang, Shuhong Li, Shuhong Li, Qingru Wang, Qingru Wang, Shuzhen Xia, Shuzhen Xia, Binyuan Zhang, Binyuan Zhang, Minghong Wang, Minghong Wang, Quli Fan, Quli Fan, "Improvement of amplified spontaneous emission performance in organic waveguides", Proc. SPIE 9941, Organic Light Emitting Materials and Devices XX, 99411K (23 September 2016); doi: 10.1117/12.2235673; https://doi.org/10.1117/12.2235673

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