Xudong Li

Dr. Xudong Li

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150080, China
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 April 2022 in Science
Verified
Journal Article
Closed access
XLXin Liu
Xin Liu
PTPeng Tan
Peng Tan
XMXue Ma
Xue Ma
Danyang WangDanyang Wang
Danyang Wang
XJXinyu Jin
Xinyu Jin
Shujun ZhangShujun Zhang
Shujun Zhang
Relaxor-lead titanate (PbTiO3) crystals, which exhibit extremely high piezoelectricity, are believed to possess high electro-optic (EO) coefficients. However, the optical transparency of relaxor-PbTiO3crystals is severely reduced as a result of light scattering and reflection by domain walls, limiting electro-optic applications. Through synergistic design of a ferroelectric phase, crystal orientation, and poling technique, we successfully removed all light-scattering domain walls and achieved an extremely high transmittance of 99.6% in antireflection film–coated crystals, with an ultrahigh EO coefficientr33of 900 picometers per volt (pm V−1), >30 times as high as that of conventionally used EO crystals. Using these crystals, we fabricated ultracompact EO Q-switches that require very low driving voltages, with superior performance to that of commercial Q-switches. Development of these materials is important for the portability and low driving voltage of EO devices.

18 October 2017 in Optics Express
Verified
Journal Article
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PDF file
WWWentao Wu
Wentao Wu
Xudong LiXudong Li
Xudong Li
RYRenpeng Yan
Renpeng Yan
YZYiping Zhou
Yiping Zhou
YMYufei Ma
Yufei Ma
DCDeying Chen
Deying Chen
We demonstrated a cavity-dumped burst-mode 1.06 μm side-pumped Nd:YAG laser and its dual-stage dual-pass amplified laser performance. The cavity dumping process has been theoretically studied and the output performance has been experimentally investigated. At the pumping duration of 2 ms and pumping frequency of 10 Hz, burst energy, peak power and pulse width of the amplified laser reached 1.89 J, 2.87 MW and 3.1 ± 0.3 ns, respectively, at the Q-switch repetition rate of 100 kHz. The maximum energy extraction efficiency reaches to 30%.

13 July 2009 in Optics Express
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Journal Article
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Xudong LiXudong Li
Xudong Li
XYXin Yu
Xin Yu
FCFei Chen
Fei Chen
RYRenpeng Yan
Renpeng Yan
JYJunhua Yu
Junhua Yu
DCDeying Chen
Deying Chen
We present the laser properties of continuous-grown Nd:GdVO4/GdVO4 and Nd:YVO4/YVO4 composite crystals under LD direct pumping. The maximum CW output powers of 20W with a slope efficiency of 74.9% to absorbed pump power and 32W with 82.7% were obtained in Nd:GdVO4/GdVO4 and Nd:YVO4/YVO4 lasers, respectively. To our knowledge, this is the highest slope efficiency obtained in Nd3+ lasers. Furthermore, at the repetition rate of 100kHz, the minimum pulse width of 15.0ns and 12.9ns, the peak power of 11.8kW and 22.4kW were obtained for Nd:GdVO4/GdVO4 and Nd:YVO4/YVO4 lasers, respectively.

25 November 2019 in Optics Express
Verified
Journal Article
Closed access
PDF file
WWWentao Wu
Wentao Wu
Xudong LiXudong Li
Xudong Li
FMFeng Mei
Feng Mei
DCDeying Chen
Deying Chen
Renpeng YanRenpeng Yan
Renpeng Yan
We demonstrated a sub-nanosecond burst-mode MOPA Nd:YAG laser at 1.06 µm that consists of a cavity-dumped Q-switched master oscillator and a double-pass side-pumped amplification system. During the 1 kHz burst-mode operation, outputs with the single pulse energy of 29.8 mJ were obtained within the burst duration of 100 ms. The pulse width was 900 ps, which resulted in a peak power of 33.1 MW. During the 10 Hz operation, the single pulse energy reached 81 mJ with a pulse width of 900 ps, which resulted in a peak power of 90 MW.

25 March 2010 in Optics Express
Verified
Journal Article
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PDF file
Xudong LiXudong Li
Xudong Li
XYXin Yu
Xin Yu
FCFei Chen
Fei Chen
RYRenPeng Yan
RenPeng Yan
MLMing Luo
Ming Luo
DCDeYing Chen
DeYing Chen
Power scaling of end-pumped Nd:GdVO4 laser was realized by direct pumping, grown-together composite crystal and dual-end-pumping. A maximum CW output power of 46.0W with M2<1.1 was achieved, corresponding to a slope efficiency of 71.1% to absorbed pump power. In A-O Q-switch operation, peak power of 304.1kW, 58.6kW and 23.8kW, pulse width of 7.2ns, 11.3ns and 16.2ns were obtained at the repetition rates of 10kHz, 50kHz and 100kHz, respectively.

21 May 2009 in Optics Express
Verified
Journal Article
Closed access
PDF file
Xudong LiXudong Li
Xudong Li
XYXin Yu
Xin Yu
FCFei Chen
Fei Chen
RYRenpeng Yan
Renpeng Yan
JGJing Gao
Jing Gao
DCDeying Chen
Deying Chen
We detail the comparison on laser performance of Nd:GdVO4 and Nd:YVO4 lasers at high repetition rates operated at 1.06µm under direct diode pumping of the upper laser level. The results reveal that Nd:GdVO4 and Nd:YVO4 are efficient laser crystals for solid-state lasers under direct pumping of the emitting level. However, Nd:YVO4 crystal, compared with Nd:GdVO4 crystal, is a more favorable gain medium when higher repetition rates and shorter pulse width are desired, owning to its larger stimulated emission cross-section.