Lifen Liao
Chinese Academy of Sciences
10 Papers
14 Citations
Lifen Liao is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Laser beam quality & Q-switching. The author has an hindex of 2, co-authored 7 publications.
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Papers
Patent
Measurement method and device for particle doping concentration uniformity of laser crystal
Liu Hao,Fan Zhongwei,Qiu Jisi,Tang Xiongxin,Lifen Liao,Wang Haocheng,He Jianguo,Mo Zeqiang,Liu Yueliang +8 more
- 24 Oct 2017
TL;DR: In this article, a measurement method and device for particle doping concentration uniformity of a laser crystal was proposed, in which an LD optical fiber coupling module with central wavelength corresponding to a strong absorption peak of the laser crystal is used for outputting any axial cross section part of a pumped laser crystal, transmitted power is received by a power meter on the transmission surface of the corresponding laser crystal.
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Patent
Single bar power and stability measuring device in laser diode lamination array and the method
Lifen Liao,Ma Yunfeng,Cheng Wang,Chen Yanzhong,Liu Hao,Fan Zhongwei +5 more
- 08 Sep 2017
TL;DR: In this paper, a single bar power and stability measuring device in a laser diode lamination array is proposed, which consists of a light guiding pipe, a horizontally moving station, a light separation waveguide reflector, an integrating sphere, a detection window, and a power meter.
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Compact Polygonal Active-Mirror Laser With Composite Nd:YAG/YAG Gain Medium
Yanzhong Chen,Ye Lang,Lifen Liao,Zhongwei Fan,He Jianguo,Guo Guangyan,Weiran Lin,Yunfeng Ma,Hongbo Zhang,Jian Zhang +9 more
TL;DR: In this article, a compact polygonal active-mirror (PAM) laser with composite Nd: YAG/YAG multithin-disk gain medium was demonstrated with total internal reflection scheme.
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Simulation of the transient thermally induced beam quality degradation in end-pumped slab Yb:YAG amplifiers of hundred-mJ-level
Ye Lang,Ye Lang,Jianguo Xin,Kamal Alameh,Zhongwei Fan,Yanzhong Chen,Wenqi Ge,Hongbo Zhang,Lifen Liao +8 more
TL;DR: In this article, the transient thermal distribution and thermally induced beam quality degradation in low repetition (10 Hz) and hundredmJ-level end-pumped Yb:YAG slab amplifiers with different thicknesses are discussed.
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Actively Q-switched laser with novel Nd:YAG/YAG polygonal active-mirror
Ye Lang,Yanzhong Chen,Wenqi Ge,He Jianguo,Hongbo Zhang,Lifen Liao,Jianguo Xin,Jian Zhang,Zhongwei Fan +8 more
Abstract: In this work, we demonstrate an efficient actively Q-switched laser based on a novel crystal Nd:YAG/YAG polygonal active mirror. A passively cooled crystal Nd:YAG/YAG polygonal active mirror with an end pump scheme was used as the gain medium. For the overlap between the TEM00 laser mode and large gain profile, a cavity was carefully designed with a large fundamental mode volume. With a maximum absorbed power of 3.1 W, a 685 mW average output power with a pulse repetition of 5 kHz was attained, and the corresponding optical–optical and slope efficiency were 22.1% and 27.7%, respectively. The pulse width was 133.9 ns. The beam quality (M2) was 1.561 in the horizontal direction and 1.261 in the vertical direction.
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