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	Saturated helical mode in EAST high beta hybrid plasmas 期刊论文 OAI收割 NUCLEAR FUSION, 2020, 卷号: 60 作者: Yuan, Yi; Hu, Liqun; Xu, Liqing; Chao, Yan; Liu, Haiqing \| 收藏 \| 浏览/下载：40/0 \| 提交时间：2020/11/26 hybrid scenario long-lived mode helical core toroidal rotation damping mode coupling flux pumping
	Counter-Rotating Type Pump-Turbine Unit Cooperating with Wind Power Unit 期刊论文 OAI收割 JOURNAL OF THERMAL SCIENCE, 2013, 卷号: 22, 期号: 1, 页码: 7,12 Tengen Murakami; Toshiaki Kanemoto 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/04/27 pump-turbine pumping mode turbine mode power supply counter-rotation
	808nm high-power high-efficiency GaAsP/GaInP laser bars (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China 作者: Wang Y.; Wang L.; Wang L.; Wang L.; Liu Y. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 808nm high power diode lasers which is rapidly maturing technology technically and commercially since the introduction in 1999 of complete kilowatt-scale diode laser systems have important applications in the fields of industry and pumping solid-state lasers (DPSSL). High power and high power conversion efficiency are extremely important in diode lasers and they could lead to new applications where space weight and electrical power are critical. High efficiency devices generate less waste heat which means less strain on the cooling system and more tolerance to thermal conductivity variation a lower junction temperature and longer lifetimes. Diode lasers with Al-free materials have superior power conversion efficiency compared with conventional AlGaAs/GaAs devices because of their lower differential series resistance and higher thermal conductivity. 808nm GaAsP/GalnP broad-waveguide emitting diode laser bars with 1mm cavity length have been fabricated. The peak power can reach to 100.9W at 106.5A at quasicontinuous wave operation (200s 1000Hz). The maximum power conversion efficiency is 57.38%. Based on these high power laser bars we fabricate a 1 3 arrays the maximum power is 64.3 W in continuous wave mode when the current is 25.0A. And the threshold current is 5.9A the slope efficiency is 3.37 W/A. 2008 SPIE.
	采用国产双包层光纤的声光调Q激光器期刊论文 OAI收割 Chin. Opt. Lett., 2007, 卷号: 5, 期号: 9, 页码: 522, 523 赵宏明; 楼祺洪; 周军; 张芳沛; 董景星; 魏运荣; 李立波; 王之江收藏 \| 浏览/下载：2327/336 \| 提交时间：2009/09/18 光纤激光器 Beam quality 调Q Laser mode locking 锁模 Laser pulses 二极管抽运 Optical fibers Pumping (laser) Q switched lasers Semiconductor lasers
	Noise characteristic of laser diode pumped orange-yellow solid-state laser by intracavity sum-frequency of KTP Phase matching II (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Tan H.; Gao L. 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/03/25 The laser diode pumped Nd: YVO4 orange-yellow laser has been presented in this paper. The fundamental wavelengths of 1064nm and 1342nm oscillate simultaneous to generate the 593.5nm wavelength by intracavity sumfrequency of KTP nonlinear crystal phase matching II. The noise characteristic of laser output has been measured and analyzed in different pumping power. The relations between the amplitude noise of sum-frequency output and the longitudinal mode of fundamental frequency have been researched. The results show that the sum-frequency output is low noise if the one of fundamental wavelengths is single longitudinal mode. The experiments show that amplitude noise of intracavity sum-frequency laser is lower than that of intracavity doubled frequency laser with the same structure.
	All fiber ytterbium-doped fiber grating laser (EI CONFERENCE) 会议论文 OAI收割 High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China 作者: Zhang L.; Wang L.; Wang L.; Wang L.; Ning Y.-Q. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 Based on requirement of all fiber structure all fiber Yb-doped fiber grating laser uses double cladding fiber with Yb-doped as gain medium uses fiber grating as resonance cavity and employs semiconductor laser as pumping source to realize the lasing based on the reverse of Yb ion. We use Bragg fiber grating as the resonance cavity of fiber laser and 970nm LD as pumping source pump the Yb-doped double cladding fiber with circular inner-cladding. We realized 7.5 W single-mode laser output central wavelength of 1080nm FWHM of 0.11 nm under the pump power of 11.8W. Maxim conversion efficiency is 63.5 % and slope efficiency of 46.4%.
	Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Zhang G.; Zhang G.; Zhang G.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：34/0 \| 提交时间：2013/03/25 Considering laser medium thermal lens effect and thermal focal length changes with pumping power conventionally lasers are designed to operate in the middle of thermal stable zones where the fundamental mode size is insensitive to thermal perturbation while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity lasers are designed to work at the border of stable zone instead where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules acoustic Q-switch and LBO external frequency-doubled over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch high beam quality green IR and green IR lasers are obtained conveniently.