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32 results on '"Zong Nan"'

5. Generation of a 177.3 nm VUV laser with high pulse energy by a KBBF crystal

Author

Wen, Ning, primary, Zong, Nan, additional, Zhang, Feng-Feng, additional, Yang, Feng, additional, Wang, Zhi-Min, additional, Zhang, Shen-Jin, additional, Bo, Yong, additional, Peng, Qin-Jun, additional, Cui, Da-Fu, additional, Xu, Zu-Yan, additional, Wang, Xiao-Yang, additional, Liu, Li-Juan, additional, and Li, Ru-Kang, additional

Published
2020
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6. 12.6 W single-frequency continuous-wave 671 nm laser with an external second harmonic generation cavity

Author

Liu, Xu-Chao, primary, Wang, Zhi-Min, additional, Zhang, Yi-Xuan, additional, Zhou, Zi-Han, additional, Zhang, Feng-Feng, additional, Liu, Qian-Qian, additional, Xu, Yi-Chen, additional, Song, Yue, additional, Yang, Rui-Nan, additional, Zong, Nan, additional, Bo, Yong, additional, Peng, Qin-Jun, additional, Cui, Da-Fu, additional, and Xu, Zu-Yan, additional

Published
2020
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12. High-power narrow-linewidth QCW diode-pumped TEM001319 nm Nd:YAG oscillator using twisted-mode technique

Author

Bian, Qi, primary, Zhong, Qing-Shuang, additional, Chang, Jin-Quan, additional, Guo, Chuan, additional, Bo, Yong, additional, Zuo, Jun-Wei, additional, Shen, Yu, additional, Zong, Nan, additional, Zhang, Shen-Jin, additional, Yuan, Lei, additional, Cui, Da-Fu, additional, Peng, Qin-Jun, additional, Chen, Hong-Bin, additional, and Xu, Zu-Yan, additional

Published
2017
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15. Long-pulse, high-energy, narrow-linewidth Nd:LGGG laser at 1336.63 nm with reflecting Bragg grating

Author

Li, Jia-Jia, primary, Wang, Zhi-Min, additional, Wang, Ming-Qiang, additional, Zhang, Feng-Feng, additional, Xu, Yi-Chen, additional, Guo, Chuan, additional, Zong, Nan, additional, Zhang, Shen-Jin, additional, Yang, Feng, additional, Gao, Hong-Wei, additional, Yuan, Lei, additional, Bo, Yong, additional, Cui, Da-Fu, additional, Peng, Qin-Jun, additional, and Xu, Zu-Yan, additional

Published
2017
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16. A Continuous-Wave Diode-Side-Pumped Tm:YAG Laser with Output 51 W

Author

Xu Jialin, Zong Nan, XU Zu-Yan, Peng Qin-Jun, Xu Yi-Ting, Lu Yuan-Fu, Zhang Xiao-Fu, Bo Yong, Li Cheng-Ming, Cui Qian-Jin, and Cui Da-Fu

Subjects
Materials science, business.industry, Slope efficiency, Energy conversion efficiency, Thermal effect, General Physics and Astronomy, Laser, law.invention, Wavelength, Screw thread, Optics, law, Continuous wave, Optoelectronics, business, Diode
Abstract

A compact diode-side-pumped Tm:YAG laser is presented, which can output 51 W of cw power at 2.02μm. The Tm:YAG rod is side pumped by nine diode arrays with the central wavelength of 783nm and the with bandwidth of about 2.5 nm at 25° C. To decrease the thermal effect on the both ends and dissipate the heat effectively, one composite Tm:YAG rod with the undoped YAG end caps and the screw threads on the side surface of the rod is used as the laser crystal. The maximum optical-to-optical conversion efficiency of the 2.02-μm laser output is 14.2%, with a slope efficiency of 26.8%.

Published
2008

19. 2.14 mW deep-ultraviolet laser at 165 nm by eighth-harmonic generation of a 1319 nm Nd:YAG laser in KBBF

Author

Dai, Shi-Bo, primary, Chen, Ming, additional, Zhang, Shen-Jin, additional, Wang, Zhi-Min, additional, Zhang, Feng-Feng, additional, Yang, Feng, additional, Wang, Zhi-Chao, additional, Zong, Nan, additional, Liu, Li-Juan, additional, Wang, Xiao-Yang, additional, Zhang, Jing-Yuan, additional, Bo, Yong, additional, Cui, Da-Fu, additional, Peng, Qin-Jun, additional, Li, Ru-Kang, additional, Chen, Chuang-Tian, additional, and Xu, Zu-Yan, additional

Published
2016
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20. Coaxial Multi-Wavelength Generation in YVO4 Crystal with Stimulated Raman Scattering Excited by a Picosecond-Pulsed 1064 Laser.

Author

Hao, Jing-Jie, Tu, Wei, Zong, Nan, Shen, Yu, Zhang, Shen-Jin, Bo, Yong, Peng, Qin-Jun, and Xu, Zu-Yan

Subjects
STIMULATED Raman scattering, BRILLOUIN scattering, RAMAN scattering, RAMAN lasers, LASERS, RAMAN spectroscopy, CRYSTALS
Abstract

The multiwavelength characteristics of stimulated Raman scattering (SRS) in YVO4crystal excited by a picosecond laser at 1064nm are investigated theoretically and experimentally. Laser output with seven wavelengths is achieved coaxially and synchronously at 894, 972, 1175, 1312, 1486, 1713 and 2022nm in a YVO4crystal. The maximum total Raman output energy is as high as 2.77 mJ under the pump energy of 7.75 mJ. A maximum total Raman conversion efficiency of 47.8% is obtained when the pump energy is 6.54 mJ. This is the highest order of Stokes components and the highest output energy generated by YVO4reported up to date. This work expands the Raman spectrum of YVO4crystal to the near-IR regime, with seven wavelengths covered at the same time, paving the way for new wavelength generation in the near-IR regime and its multiwavelength application. [ABSTRACT FROM AUTHOR]

Published
2020
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23. Investigation on the scattering effect of ceramic Nd:YAG

Author

Gao Hongwei, Zong Nan, Liu Wenbin, Pan Yu-Bai, Li Cheng-Ming, Feng Xi-Qi, and XU Zu-Yan

Subjects
Materials science, Scattering, business.industry, Energy conversion efficiency, Slope efficiency, General Physics and Astronomy, Laser, law.invention, Optical pumping, Optics, law, visual_art, visual_art.visual_art_medium, Continuous wave, Ceramic, business, Absorption (electromagnetic radiation)
Abstract

This paper investigates the scattering effect of domestic 0.5 at % ceramic Nd:YAG. An effective method has been utilized to measure the scattering and absorption coefficients. An end-pumped continuous wave (CW) Nd:YAG ceramic laser was also demonstrated. A maximum output power of 6.7 W at 1064 nm was obtained at an 808-nm pump power of 32.9 W. Conversion efficiency and slope efficiency have been achieved. This indicates that scattering has an important effect on the optical performance of ceramic Nd:YAG.

Published
2010

24. High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system

Author

Wang Peng-Yuan, Cui Da-Fu, Lu Yuan-Fu, XU Zu-Yan, Yang Feng, Peng Qin-Jun, Bo Yong, Zong Nan, Xie Shi-Yong, Ma Qing-Lei, and Shen Yu

Subjects
Materials science, business.industry, Amplifier, RF power amplifier, General Physics and Astronomy, Laser, law.invention, Resonator, Laser linewidth, Optics, law, Optoelectronics, M squared, Laser beam quality, Laser power scaling, business
Abstract

This paper demonstrated a high power and high beam quality diode-pumped 1319-nm Nd:YAG master oscillator-power amplifier laser system. A thermally near-unstable resonator with four-rod birefringence compensation flat-flat cavity was adopted as the master oscillator. A solid etalon was inserted in the unidirectional ring resonator to compress the laser linewidth. Under a repetition rate of 500 Hz and pulse width of 160 μs, the master oscillator delivers an average output power of 16.8 W at 1319 nm with linear polarisation, beam quality factor M2 = 1.16 and linewidth of 3.2 GHz. A double-pass power amplifier with two amplifier stages was employed for higher power scaling and the output power was amplified to be 25.9 W with M2 = 1.43.

Published
2010

25. Q-Switched Tm:YAG Laser Intracavity-Pumped by a 1064 nm Laser

Author

Xu Jialin, Peng Qin-Jun, Guo Ya-Ding, MA Qing-Lei, Bo Yong, Cui Da-Fu, XU Zu-Yan, Yang Feng, Zong Nan, and Xie Shi-Yong

Subjects
Dye laser, Materials science, business.industry, General Physics and Astronomy, Laser pumping, Laser, Q-switching, law.invention, X-ray laser, Optics, Solid-state laser, law, Diode-pumped solid-state laser, business, Pulse-width modulation
Abstract

We report a Q-switched 2-μm Tm:YAG laser based on intracavity-pumped by a 1064-nm Nd:YAG laser operating at room temperature for the first time. An average output power of 5.1 W is obtained with the repetition rate of 30 kHz and a pulse width of 300 ns. In addition, we demonstrate a 12.5-W continuous-wave 2-μm Tm:YAG laser, which is, to our best knowledge, the highest power for intracavity-pumping configuration.

Published
2009

26. High-Efficiency High-Power Nd: YAG Laser under 885 nm Laser Diode Pumping

Author

Zong Nan, Peng Qin-Jun, XU Zu-Yan, Cui Da-Fu, Zhang Xiao-Fu, Yang Jing, and LI Fang-Qin

Subjects
Materials science, Laser diode, business.industry, Slope efficiency, Energy conversion efficiency, General Physics and Astronomy, Laser pumping, Laser, law.invention, X-ray laser, Optics, law, Nd:YAG laser, Diode-pumped solid-state laser, Optoelectronics, business
Abstract

A high-efficiency high-power Nd:YAG laser under 885nm laser diode (LD) pumping is demonstrated. The laser crystal is carefully designed, and the overlapping between the pump modes and the laser modes is optimized. The maximum output power at 1064 nm is 87W under the absorbed pump power 127.7W, corresponding to a slope efficiency of 72.4% and an optical-optical efficiency of 68.1%. The optical-optical efficiency is 58.4% for the pump power emitted directly from the LD. To our best knowledge, this is the maximal optical-optical conversion efficiency obtained for the LD end-pumped Nd:YAG lasers so far.

Published
2009

27. Comparison of Nd:YAG Ceramic Laser Pumped at 885 nm and 808 nm

Author

Pan Yu-Bai, Cui Da-Fu, Wang Baoshan, Feng Xi-Qi, Peng Qin-Jun, Zong Nan, Zhang Xiao-Fu, XU Zu-Yan, and MA Qing-Lei

Subjects
Materials science, business.industry, Slope efficiency, Doping, General Physics and Astronomy, Laser, Electromagnetic radiation, law.invention, Optical pumping, Optics, law, Nd:YAG laser, visual_art, visual_art.visual_art_medium, Laser beam quality, Ceramic, business
Abstract

Laser performance of 1064 nm domestic Nd:YAG ceramic lasers for 885 nm direct pumping and 808 nm traditional pumping are compared. Higher slope efficiency of 34% and maximum output power of 16.5 W are obtained for the 885 nm pump with a 6 mm length 1 at.% Nd:YAG ceramic. The advantages for 885 nm direct pumping are discussed in detail. This pumping scheme for highly doping a Nd:YAG ceramic laser is considered as an available way to generate high power and good beam quality simultaneously.

Published
2009

28. Investigation on the scattering effect of ceramic Nd:YAG.

Author

Li Cheng-Ming, Zong Nan, Gao Hong-Wei, Xu Zu-Yan, Liu Wen-Bin, Pan Yu-Bai, and Feng Xi-Qi

Subjects
*ND-YAG lasers, *CERAMIC materials, *ABSORPTION, *LIGHT scattering, *OPTICAL properties, *PERFORMANCE evaluation, *ENERGY conversion
Abstract

This paper investigates the scattering effect of domestic 0.5 at% ceramic Nd:YAG. An effective method has been utilized to measure the scattering and absorption coefficients. An end-pumped continuous wave (CW) Nd:YAG ceramic laser was also demonstrated. A maximum output power of 6.7 W at 1064 nm was obtained at an 808-nm pump power of 32.9 W. Conversion efficiency and slope efficiency have been achieved. This indicates that scattering has an important effect on the optical performance of ceramic Nd:YAG. [ABSTRACT FROM AUTHOR]

Published
2010
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29. High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system.

Author

Xie Shi-Yong, Lu Yuan-Fu, Ma Qing-Lei, Wang Peng-Yuan, Shen Yu, Zong Nan, Yang Feng, Bo Yong, Peng Qin-Jun, Cui Da-Fu, and Xu Zu-Yan

Subjects
DIODES, ND-YAG lasers, LASER beams, DOUBLE refraction, OPTICAL polarization, LIGHT amplifiers
Abstract

This paper demonstrated a high power and high beam quality diode-pumped 1319-nm Nd:YAG master oscillator- power amplifier laser system. A thermally near-unstable resonator with four-rod birefringence compensation flat-flat cavity was adopted as the master oscillator. A solid etalon was inserted in the unidirectional ring resonator to compress the laser linewidth. Under a repetition rate of 500 Hz and pulse width of 160 μs, the master oscillator delivers an average output power of 16.8 W at 1319 nm with linear polarisation, beam quality factor M2 = 1.16 and linewidth of 3.2 GHz. A double-pass power amplifier with two amplifier stages was employed for higher power scaling and the output power was amplified to be 25.9 W with M2 = 1.43. [ABSTRACT FROM AUTHOR]

Published
2010
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30. A Continuous-Wave Diode-Side-Pumped Tm:YAG Laser with Output 51 W.

Author

Zhang Xiao, Xu Yi, Li Cheng, Zong Nan, Xu Jia, Cui Qian, Lu Yuan, Bo Yong, Peng Qin, Cui Da, Fu and, and Xu Zu

Subjects
DIODES, LASERS, BANDWIDTHS, ENERGY dissipation
Abstract

A compact diode-side-pumped Tm:YAG laser is presented, which can output 51 W of cw power at 2.02mm. The Tm:YAG rod is side pumped by nine diode arrays with the central wavelength of 783nm and the with bandwidth of about 2.5 nm at 25deg C. To decrease the thermal effect on the both ends and dissipate the heat effectively, one composite Tm:YAG rod with the undoped YAG end caps and the screw threads on the side surface of the rod is used as the laser crystal. The maximum optical-to-optical conversion efficiency of the 2.02-mm laser output is 14.2%, with a slope efficiency of 26.8%. [ABSTRACT FROM AUTHOR]

Published
2008
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31. The Physical Properties of S0 Galaxy PGC 26218: The Origin of Starburst and Star Formation.

Author

Xue Ge, Qiu-Sheng Gu, Rubén García-Benito, Meng-Yuan Xiao, and Zong-Nan Li

Subjects
STAR formation, MILKY Way, NUCLEAR structure, GALAXIES, OPTICAL images, PLANETARY nebulae, STARBURSTS
Abstract

We present 2D-spectroscopic observations from the Centro Astronómico Hispano Alemán 3.5 m telescope and millimeter observations from the NOrthern Extended Millimeter Array of the nearby S0 galaxy PGC 26218, which shows central star formation activity and post-starburst features in the disk. We estimate the star formation rate (SFR = 0.28 ± 0.01 M⊙ yr−1) and molecular gas mass () of PGC 26218 based on the extinction-corrected Hα emission line and the CO–H2 conversion factor (αCO) of the Milky Way, respectively. We find that PGC 26218 follows the star-forming main sequence (SFMS) and the Kennicutt–Schmidt law. Comparing the kinematics of CO(J = 1–0), stars, and Hα, we find that the rotational axis of CO(J = 1–0) is 45° different from that of Hα. In addition, the profile of the CO(J = 1–0) emission line shows asymmetry and has an inflow component of ∼46 km s−1. With the decomposition of the optical image, we confirm that PGC 26218 shows multiple nuclear structures. The projected offset between the most luminous optical center and the center of CO(J = 1–0) is 5.″2 (∼0.6 kpc) and the latter overlaps with one of the optical cores. These results indicate that PGC 26218 may have experienced a gas-rich minor merger, extending its star formation and locating it in the SFMS. [ABSTRACT FROM AUTHOR]

Published
2020
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32. Q-Switched Tm:YAG Laser Intracavity-Pumped by a 1064 nm Laser.

Author

Ma Qing, Zong Nan, Xie Shi, Yang Feng, Guo Ya, Xu Jia, Bo Yong, Peng Qin, Cui Da, Fu and, and Xu Zu

Subjects
*SOLID-state lasers, *OPTICAL pumping, *ULTRASHORT laser pulses, *ND-YAG lasers, *TEMPERATURE effect, *WAVE mechanics
Abstract

We report a Q-switched 2-mm Tm:YAG laser based on intracavity-pumped by a 1064-nm Nd:YAG laser operating at room temperature for the first time. An average output power of 5.1 W is obtained with the repetition rate of 30 kHz and a pulse width of 300 ns. In addition, we demonstrate a 12.5-W continuous-wave 2-mm Tm:YAG laser, which is, to our best knowledge, the highest power for intracavity-pumping configuration. [ABSTRACT FROM AUTHOR]

Published
2009
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