Stimulated emission in high-gain organic media
Stimulated emission in high-gain organic media
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DOI：
10.1103/physrevb.59.r5284
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发表时间：
1999-02-15
影响因子：
3.7
通讯作者：
Baughman, RH
中科院分区：
文献类型：
--
作者：
Frolov, SV;Vardeny, ZV;Baughman, RH
研究了不同散射增益介质中的受激辐射，包括薄的共轭聚合物薄膜，有机染料掺杂的凝胶薄膜，和饱和聚合物和激光染料溶液的蛋白石晶体。我们发现，在：高激发强度的一个无特征的放大自发辐射带转化成一个精细结构的光谱具有窄至0.1 nm的功能。受激发射在这一制度是定向的，其特征在于由一个线性的激光强度依赖性。我们推测：这种现象是由于光在非均匀增益介质中的散射引起的光反馈。
Stimulated emission was studied in Various scattering gain media, including thin rr-conjugated polymer films, organic dyes-doped gel films, and opal crystals saturated with polymer and laser dye solutions. We found that at:high excitation intensities a featureless amplified spontaneous emission band transforms into a finely structured spectrum having features as narrow as 0.1 nm. Stimulated emission in this regime is directional and characterized by a linear laserlike intensity dependence. We speculate that: this phenomenon is due to optical feedback caused by light scattering inside the inhomogeneous gain media.