Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
University of Chinese Academy of Sciences , Beijing 100049, China.
J Am Chem Soc. 2017 Aug 23;139(33):11329-11332. doi: 10.1021/jacs.7b06174. Epub 2017 Aug 14.
All-color subwavelength output of lasers was demonstrated in a rationally designed organic microdisk/silver nanowire heterostructures. The dye-doped flexible microdisks served as the wavelength tunable whispering-gallery-mode lasers with low lasing thresholds, whereas the silver nanowires supported the output of the lasing mode as subwavelength coherent light sources. The wavelength of the outcoupled laser was tuned over the full visible spectrum scope owing to the flexibility of the microdisks and their compatibility with various organic laser dyes. Furthermore, a multicolor subwavelength laser was achieved in a single heterostructure and the laser output was successfully modulated by varying the surface plasmon polariton propagation length.
在合理设计的有机微盘/银纳米线异质结构中，演示了全彩亚波长输出的激光。染料掺杂的柔性微盘作为低激光阈值的波长可调谐 whispering-gallery 模式激光器，而银纳米线则作为亚波长相干光源支持激光模式的输出。由于微盘的灵活性及其与各种有机激光染料的兼容性，外耦合激光的波长可以在整个可见光光谱范围内进行调谐。此外，在单个异质结构中实现了多色亚波长激光，并且通过改变表面等离子体激元传播长度成功地对激光输出进行了调制。
