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Your search keyword '"Qiao, Wenchao"' showing total 239 results
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239 results on '"Qiao, Wenchao"'

21. Nonlinear Optical Modulation Characteristics of MXene Cr 2 C for 2 μm Pulsed Lasers.

Author

Yu, Jingcheng, Chen, Zijun, Li, Tao, Feng, Tianli, Huang, Jiacheng, Liu, Yizhou, Ni, Zheng, Yu, Li, and Qiao, Wenchao

Subjects
OPTICAL modulation, LASER pulses, PULSED lasers, Q-switched lasers, Q-switching, SURFACE morphology, SOLID-state lasers
Abstract

MXene materials have shown numerous useful mechanical and electronic properties, and have been found to possess nice potential in the field of optical modulation. Here, we fabricated a MXene Cr2C saturable absorber by the liquid-phase exfoliation method, and systemically analyzed the surface morphology and nonlinear properties of the Cr2C sample. Applying the Cr2C saturable absorber as a Q-switch in a thulium-doped yttrium aluminum perovskite (Tm: YAP) laser, the shortest single pulse was obtained with a width of 602 ns under an absorbed pump power of 3.3 W at a repetition rate of 55 kHz with a T = 1% output coupler. The maximum output power was obtained with a T = 5% output coupler at a repetition rate of 58 kHz. The obtained maximum pulse energy and peak power were 3.96 μJ and 4.36 W, separately, which reveal that the MXene Cr2C can be applied as a promising modulation material in the near-infrared pulsed lasers. [ABSTRACT FROM AUTHOR]

Published
2023
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22. All-Polarization-Maintaining, Mode-Locking Fiber Front-End Laser Delivering Both the Picosecond Seed Laser and the Femtosecond Seed Laser.

Author

Zhang, Yinuo, Zhang, Hao, Gao, Kong, Qiao, Wenchao, Feng, Tianli, Zhao, Xian, and Liu, Yizhou

Subjects
FEMTOSECOND lasers, COTTON quality, MODE-locked lasers, FIBER lasers, SEEDS, LASERS, MIRRORS
Abstract

An ytterbium-doped, mode-locking fiber front-end laser, delivering both a femtosecond seed laser and picosecond seed laser, was demonstrated. The fundamental repetition rate of the 1031 nm mode-locked laser was 32.77 MHz, realized with the all-polarization-maintaining (all-PM) nonlinear amplifying loop mirror (NALM). The femtosecond seed laser and the picosecond seed laser were delivered after carefully optimizing the nonlinear amplification process. The corresponding pulse durations were 85 fs and 2.88 ps, with average power of 171 mW and 562.5 mW, respectively. [ABSTRACT FROM AUTHOR]

Published
2023
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50. 高功率超快光纤激光技术发展研究

Author

Liu Yizhou, 刘一州, primary, Qiao Wenchao, 乔文超, additional, Gao Kong, 高空, additional, Xu Rong, 徐荣, additional, Feng Tianli, 冯天利, additional, Zhang Meng, 张萌, additional, Li Xun, 李珣, additional, Liang Yangyang, 梁洋洋, additional, and Li Tao, 李涛, additional

Published
2021
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