Laser printing controllable photonic-molecule microcavities

Laser printing controllable photonic-molecule microcavities
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激光打印可控光子分子微腔

DOI:
10.1016/j.optcom.2019.125036
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发表时间:
2020-03
影响因子:
2.4
通讯作者:
Li Ai-Wu
Li Ai-Wu
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Mu-Tian;Hou Zhi-Shan;Huang Qiu-Lan;Xu Su;Li Ai-Wu

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光学微腔由于其对环境的敏感性,在高精度传感和检测领域有着广泛的应用。在此,我们使用飞秒激光直写(FsLDW)应用PEG-DA水凝胶(聚乙二醇二丙烯酸酯),一种对环境湿度具有快速和显着响应的聚合物材料,在回音壁模式(WGM)微腔谐振器的制造。环境湿度的变化使谐振腔均匀地膨胀或收缩,WGM激光发射稳定。在我们的实验中,制备了两个间距为1 μ m,半径为10 μ m的微腔。由于微腔的体积可以通过改变环境湿度来控制,因此可以通过改变环境湿度来智能地控制光子-分子微腔的耦合。这一结果将激发人们对可控光子分子微腔的进一步研究。
Optical microcavity is widely used in high precision sensing and detection fields because of its sensitivity to the environment. Herein, we used femtosecond laser direct writing (FsLDW) to apply PEG-DA hydrogel (polyethylene glycol diacrylate), a polymer material with rapid and significant response to environmental humidity, in fabrication of a whispering gallery mode (WGM) microcavity resonator. Changes in ambient humidity made the cavity expand or contract evenly with stable WGM laser emission. In our experiment, two microcavities spaced 1 μ m apart with a radius of 10 μ m were prepared. Since the volume of the microcavity can be controlled by changing the ambient humidity, the coupling of photonic-molecular microcavities can be intelligently controlled by changing the environmental humidity. The results will inspire further novel ideas about controllable photonic-molecular microcavities.
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