Optofluidic Lasers with Monolayer Gain at the Liquid–Liquid Interface
Optofluidic Lasers with Monolayer Gain at the Liquid–Liquid Interface
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DOI：
10.1021/acsphotonics.6b00983
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发表时间：
2017-02
期刊：
影响因子：
7
通讯作者：
Han Zhang;A. Balram;D. D. Meng-D.;Yuze Sun
中科院分区：
文献类型：
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作者：
Han Zhang;A. Balram;D. D. Meng-D.;Yuze Sun
我们报告了具有单层增益材料的光流控激光器，该材料在两相液-液界面处自组装。自组装过程确定性地在微滴光学腔的表面引入增益，其中激光模式与增益介质具有最大的相互作用。在这种表面增益几何结构中可以实现完整的单层增益，表面密度约为 1014 cm-2，事实证明，通过表面固定方法在固液界面处创建的单层增益即使不是不可能，也是很难实现的。我们证明，局限于液-液界面的增益材料和均匀分布在本体液体溶液中的增益材料之间的激光特性有很大不同。我们的研究揭示了表面增益几何光流控激光器的独特功能，它可以开发成一种新型传感平台，用于在分子水平上研究生物物理和生化过程，并具有...
We report optofluidic lasers with a monolayer gain material that self-assembles at the two-phase liquid–liquid interface. The self-assembly process deterministically introduces the gain at the surface of a microdroplet optical cavity, where the lasing mode has maximal interaction with the gain medium. A complete monolayer gain can be achieved in this surface-gain geometry, giving a surface density on the order of 1014 cm–2, which proves to be difficult, if not impossible, to achieve in the monolayer gain created at the solid–liquid interface via the surface immobilization method. We demonstrated that the lasing characteristics are drastically different between the gain material that is confined to the liquid–liquid interface and that homogeneously distributed in the bulk liquid solution. Our study reveals the unique capabilities of the surface-gain geometry optofluidic laser, which can be developed into a novel sensing platform to study biophysical and biochemical processes at the molecular level and has ...