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Tingdong Cai on Muck Rack

Tingdong Cai

As seen in: Nature
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Articles

Sub-parts-per-billion CO 2 Detection based on Dissipative Whispering Gallery Mode Microcavity Sensor

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By Guangzhen Gao, Jianing Zhang, Haotian Wang, Jun Guo, Chuanyong Ren, Weidong Chen, Deyuan Shen, Tingdong Cai, Shujing Ruan, Dongxing Cheng
| Nature Verified
Abstract Whispering gallery mode microcavities provide strong light–matter interactions owing to their ultrahigh optical confinement, but the small gas refractive index change limits their ability to sense trace gases. Here we show that gas absorption can be detected using a dissipative sensing mechanism in a non-functionalized whispering gallery mode microcavity.
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Multi-laser sensor for simultaneous multi-gas measurements using off-axis cavity-enhanced absorption spectroscopy with an opposite two-way configuration

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By Fangyu Long, Mingke Zhang, Tingdong Cai, Guangzhen Gao
| optica.org
Abstract An opposite two-way off-axis cavity-enhanced absorption spectroscopy-based multi-gas sensor is reported. More than two lasers can be employed in the sensor for simultaneous detection of different gas species.
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