Tunable optofluidic liquid metal core microbubble resonator
Posted on 2020-01-15 - 22:01
This study introduces design and coupling techniques, which ingeniously 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 electrically tuned (>3 nm) over a full free spectral range because the Ohmic heating changed the refractive index of the silica. The mechanical mode was electrically tuned with a relative tuning range of 9% because the Ohmic heating changed the velocity and density of the liquid metal.
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Qijing, Lu; Chen, Xiaogang; liu, xianlin; Fu, Liang; Zou, Chang-Ling; Xie, Shusen (2020). Tunable optofluidic liquid metal core microbubble resonator. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4723499.v1
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AUTHORS (6)
LQ
Lu Qijing
XC
Xiaogang Chen
xl
xianlin liu
LF
Liang Fu
CZ
Chang-Ling Zou
SX
Shusen Xie