Optical amplification and stability of spiroquaterphenyl compounds and blends
Optical amplification and stability of spiroquaterphenyl compounds and blends
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DOI：
10.2971/jeos.2015.15007
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发表时间：
2015-02
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影响因子：
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通讯作者：
T. Fuhrmann-Lieker;J. Lambrecht;Nicolai M. Hoinka;M. Kiurski;A. Wiske;G. Hagelstein;N. Yurttagül;M. Abdelawwad;H. Wilke;F. Messow;H. Hillmer;J. Salbeck
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文献类型：
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作者：
T. Fuhrmann-Lieker;J. Lambrecht;Nicolai M. Hoinka;M. Kiurski;A. Wiske;G. Hagelstein;N. Yurttagül;M. Abdelawwad;H. Wilke;F. Messow;H. Hillmer;J. Salbeck
在这方面的贡献，我们提出了一个系统的调查螺quaterpenyl化合物优化的固态激光在近紫外（UV）。在纯（未稀释）薄膜和共混物中获得的放大自发辐射（ASE）阈值约为1 μJ/cm ^2，未取代和间位取代的四联苯的发射峰位于390±1 nm，对位醚取代的四联苯的发射峰位于400±4 nm。与透明基质混合保持低阈值，将发射转移到较低波长，并允许更好地接近在膜中更深处具有其强度最大值的模式。化学设计和混合允许独立调整光学和加工性能，如玻璃化转变。
In this contribution, we present a systematic investigation on a series of spiroquaterphenyl compounds optimised for solid state lasing in the near ultraviolet (UV). Amplified spontaneous emission (ASE) thresholds in the order of 1 μJ/cm^2 are obtained in neat (undiluted) films and blends, with emission peaks at 390±1 nm for unsubstituted and meta-substituted quaterphenyls and 400±4 nm for para-ether substituted quaterphenyls. Mixing with a transparent matrix retains a low threshold, shifts the emission to lower wavelengths and allows a better access to modes having their intensity maximum deeper in the film. Chemical design and blending allow an independent tuning of optical and processing properties such as the glass transition.