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Zhitai Zhou on Muck Rack

Zhitai Zhou

As seen in: MDPI, Optica
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Articles

111 W picosecond Ho:YAG amplifier and its application to 10 μm mid-infrared generation

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By Xiaoming Duan, Minglang Wu, Zhitai Zhou, Wenhao Cheng
| Optica Verified
In this Letter, we report a high-power picosecond Ho:YAG amplifier system delivering an average output power exceeding 111 W at a repetition rate of 10 kHz, achieving an overall gain of 93 dB, with beam quality characterized by M2 values of 1.53 and 1.65 in two orthogonal directions and highly stable operation (1.7% RMS fluctuation). To the best of our knowledge, this represents the highest average power demonstrated thus far for a 2-μm picosecond laser amplifier.
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Spatially Modulated Fiber Speckle for High-Sensitivity Refractive Index Sensing

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By Huanhuan Liu, Jie Hu, Penglai Guo, Zhitai Zhou
| MDPI
4. Discussion To ascertain the reliability of RI FSS, we carried out numerical simulation of the responses based on various modes to RI change by using the software OptiBPM 13.1.3. The results are exhibited in Figure 8. The inset of Figure 8 depicts the simulated structure and the related area’s RI distribution. In the layout, the RI of yellow core and green cladding were set as 1.457 and 1.442, respectively. The RI of blue liquid analyte was changed from 1.3301 to 1.3601.
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