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Stimulated emission from organic semiconductor

机译：来自有机半导体的刺激发射

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Optically pumped surface emitting and edge emitting stimulated emission behaviors in organic semiconductors was demonstrated in this study. For the surface emitting device, the microcavity was formed by sandwiching a polymer film containing PVK, Alq and DCM between a DBR with a reflectivity of 99.5 percent and a silver film. The sample was optically pumped by the three harmonic of a observed in DCM-doped PVK microcavity when pumped above the threshold intensity of 0.25MW/cm$+2$/. The full width at half maximum was 0.6 nm with the peak wavelength at 603nm. For the edge emitting device, a laser dye DCM doped Alq matrix wa used as the gain medium. The sample was transversely pumped by the three harmonic output of the mode-locked Nd:YAG laser. The change of the emission spectra showed a clear threshold action and gain narrowing phenomenon when increasing the excitation intensity. The spectra narrowing observe result from the amplified spontaneous emission in the gain material.
机译：本研究证明了有机半导体中的光学泵浦表面发射和边缘发射刺激的发射行为。对于表面发射装置，通过将含有PVK，Alq和DCM的聚合物膜夹在DBR之间，以99.5％的反射率和银膜，形成微胶囊。当泵送超过0.25mW / cm $ + 2 $ /时，在DCM掺杂的PVK微腔中观察到的三个谐波光学泵浦样品。半最大宽度为0.6nm，峰值波长为603nm。对于边缘发射装置，激光染料DCM掺杂Alq矩阵WA用作增益介质。通过模式锁定的Nd：YAG激光器的三个谐波输出横向泵浦样品。发射光谱的变化显示出透明的阈值作用，并且在增加激发强度时增益变窄现象。光谱缩小观察来自增益材料中的扩增的自发发射的结果。

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