Tang Zhenyu, Guo Kunping, Gao Yulai, Pan Saihu, Si Changfeng, Xu Tao, Wei Bin
Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
School of Mechanical Engineering and Automation, Shanghai University, Shanghai, 200072, People's Republic of China.
Nanoscale Res Lett. 2017 Nov 22;12(1):602. doi: 10.1186/s11671-017-2371-7.
This paper demonstrates the lasing and transport properties of a green conjugated polymer, namely POFP. High photoluminescence yields and excellent electron transport of POFP film make it promising for gain media. Low threshold value of 4.0 μJ/cm for amplified spontaneous emissions under a pulsed Nd:YAG laser at 355 nm was obtained, as well as a high Q-factor of 159. An inverted waveguide microcavity scheme has been developed to fabricate diode-pumped organic solid lasers (OSLs) using POFP. Gain narrowing with significant radiance increase was observed in the devices, giving evidence of the interference enhancement induced by microcavity and the lasing properties of POFP.
本文展示了一种绿色共轭聚合物，即聚（9,9 - 二辛基芴 - 2,7 - 二醛 - 5,5 - 二氧 - 1,4 - 苯撑乙烯撑）（POFP）的激光发射和传输特性。POFP薄膜的高光致发光产率和优异的电子传输性能使其有望成为增益介质。在355nm的脉冲Nd:YAG激光下，获得了放大自发辐射的低阈值4.0μJ/cm²，以及159的高Q因子。已开发出一种倒置波导微腔方案，以使用POFP制造二极管泵浦有机固体激光器（OSL）。在这些器件中观察到增益变窄且辐射显著增加，这证明了微腔引起的干涉增强以及POFP的激光发射特性。
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