Superradiance in Conducting Polymers and Its Application for Solid Laser

研究了导电聚合物如聚对苯基乙烯衍生物在强激发下的发射特性。光致发光的光谱变窄已经在光激发的阈值强度以上被观察到，这是在导电聚合物溶液以及薄膜中被识别的。即使在聚乙炔衍生物中，被认为是不发光的聚合物，也观察到强烈的光致发光及其光谱变窄。研究了具有周期性光波长结构的导电聚合物渗透合成蛋白石的光谱变窄和激光作用。在聚合物渗透蛋白石的光致发光光谱中观察到精细的结构。尖峰的波长取决于SiC_2的直径、球和溶剂的折射率，这与蛋白石的周期性结构引起的光反馈引起的激光作用有关。

Emission characteristics upon a intense excitation in conducting polymers such as poly (p-phenylenevinylene) derivatives have been studied. Spectral narrowing of photoluminescence has been observed above a threshold intensity of photoexcitation, which is recognized in a solution of the conducting polymers as well as a film. Even in polyacetylene derivatives which have been considered as nonluminescent polymer, intense photoluminescence and its spectral narrowing have been observed. Spectal narrowing and laser action in conducting polymer infiltrated synthetic opal which has periodic structure of light wavelength range, have also been investigated. A fine structure has been observed in the photoluminescence spectrum of polymer-infiltrated opal. The wavelength of the sharp peak depends on the diameter of SiC_2, spheres and refractive index of the solvent, which is associated with laser action originated from the optical feedback due to the periodical structure of opal.