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Xiuquan Li on Muck Rack

Xiuquan Li

As seen in: Nature, MDPI, Phys.org, Optica
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Articles

Integrated air-coupled ultrasonic transducer with front-end preamplification for structural health monitoring

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By Zhangsheng Sun, Ruiyan Wang, Hanlin Zhao, Ying Wang, Zhen Jin, Xiuquan Li
| Nature Verified
Abstract Air-coupled ultrasonic testing provides non-contact structural evaluation for scenarios in which liquid or gel couplants are impractical. However, its field deployment is limited by severe acoustic impedance mismatch, microvolt-scale received signals, electromagnetic interference, and cable-induced signal degradation.
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All-mode splice-loss estimation and splice-quality evaluation in few-mode fibers from a fundamental-mode power drop

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By Yi Qin, Wenqi Ma, Xiuquan Li
| Optica Verified
Splice-loss evaluation in few-mode fibers (FMFs) usually requires mode-by-mode measurement of each guided mode, and the complexity of the measurement system and testing procedure increases with the number of supported modes.
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New laser technique boosts power by individually controlling light modes Original

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By Wenqi Ma, Xiuquan Li, Yi Qin, Weicheng Chen
| Phys.org Verified
From precision machining to advanced microscopy, the demand for higher-power, ultrafast lasers continues to grow. Traditionally, researchers have relied on single-mode fibers to build these lasers, but they face a fundamental physical limit on energy output. To break through this bottleneck, we have turned to multimode fibers, which can carry many light modes—essentially different shapes of light—at once, a technique known as spatiotemporal mode-locking (STML).
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