光流体染料激光器中的漂白和扩散动力学
Bleaching and diffusion dynamics in optofluidic dye lasers
摘要：
我们研究了发生在光流体染料激光器中的漂白动力学，其中微流体通道中的液体激光器染料由于光泵浦而局部漂白。我们发现，对于微流控器件，染料漂白可以通过单独的染料分子的扩散来补偿。通过依赖于扩散而不是对流来产生必要的染料补充，我们的观察可能允许显著简化光流体染料激光器装置布局，从而省略对繁琐且昂贵的外部流体处理或芯片上微流体泵送装置的需要。
英文摘要：
We have investigated the bleaching dynamics that occur in optofluidic dye lasers where the liquid laser dye in a microfluidic channel is locally bleached due to optical pumping. We find that for microfluidic devices, the dye bleaching may be compensated through diffusion of dye molecules alone. By relying on diffusion rather than convection to generate the necessary dye replenishment, our observation potentially allows for a significant simplification of optofluidic dye laser device layouts, omitting the need for cumbersome and costly external fluidic handling or on-chip microfluidic pumping devices.
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