Tunable optofluidic liquid metal core microbubble resonator.
Tunable optofluidic liquid metal core microbubble resonator.
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DOI：
10.1364/oe.382514
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发表时间：
2020-01
期刊：
影响因子：
3.8
通讯作者：
Qijing Lu;Xiaogang Chen;Xianlin Liu;Liang Fu;Chang-ling Zou;S. Xie
中科院分区：
文献类型：
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作者：
Qijing Lu;Xiaogang Chen;Xianlin Liu;Liang Fu;Chang-ling Zou;S. Xie
本研究介绍了设计和耦合技术，这桥不透明的液体金属，光学WGM模式，和机械模式到一个光-机械-流体微泡谐振器（MBR）组成的介电二氧化硅外壳和液体金属芯。受益于液态金属的导电性，通过向液态金属施加电流来对MBR进行欧姆加热，以使MBR的温度改变超过300 °C。光学模式在整个自由光谱范围内被热调谐（>3 nm），因为欧姆加热改变了二氧化硅的折射率和MBR的直径。由于欧姆加热改变了液态金属的速度和密度，机械模式被热调谐，相对调谐范围为9%。
This study introduces design and coupling techniques, which bridge an opaque liquid metal, optical WGM mode, and mechanical mode into an opto-mechano-fluidic microbubble resonator (MBR) consisting of a dielectric silica shell and liquid metal core. Benefiting from the conductivity of the liquid metal, Ohmic heating was carried out for the MBR by applying current to the liquid metal to change the temperature of the MBR by more than 300 °C. The optical mode was thermally tuned (>3 nm) over a full free spectral range because the Ohmic heating changed the refractive index of the silica and dimeter of the MBR. The mechanical mode was thermally tuned with a relative tuning range of 9% because the Ohmic heating changed the velocity and density of the liquid metal.