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• OAI收割 [14]

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• 期刊论文 [9]
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• 激光器;光纤激光器 [2]
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筛选

浏览/检索结果: 共14条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 High-efficiency longwave 2085 nm laser output in low-loss Ho3+-doped fluorotellurite glass fiber by 1976 nm in-band pumping 期刊论文  OAI收割 Optics and Laser Technology, 2024, 卷号: 177 作者:  Feng, Shaohua;  Shen, Yewei;  Zhu, Jun;  Liu, Chengzhen;  Xu, Yantao   |  收藏  |  浏览/下载：19/0  |  提交时间：2024/09/04 Ho3+-doped  Fluorotellurite glass  Fiber laser  High slope efficiency  High damage threshold   Water-Saving Soil Conservation Measures Should Be Used in Northern China: Evidence from Runoff Plot Data 期刊论文  OAI收割 WATER, 2021, 卷号: 13, 期号: 6, 页码: 16 作者:  Fang, Haiyan   |  收藏  |  浏览/下载：13/0  |  提交时间：2021/07/09 runoff  soil loss  rainfall  slope  reduction efficiency   Water-Saving Soil Conservation Measures Should Be Used in Northern China: Evidence from Runoff Plot Data 期刊论文  OAI收割 WATER, 2021, 卷号: 13, 期号: 6, 页码: 16 作者:  Fang, Haiyan   |  收藏  |  浏览/下载：14/0  |  提交时间：2021/07/09 runoff  soil loss  rainfall  slope  reduction efficiency   Yb-doped large-mode-area aluminosilicate laser fibre fabricated by chelate precursor doping technique 期刊论文  OAI收割 electronics letters, 2016, 卷号: 52, 期号: 23, 页码: 1942-u42 作者:  Peng, Kun;  Wang, Zhen;  Zhan, Huan;  Ni, Li;  Gao, Cong 收藏  |  浏览/下载：117/0  |  提交时间：2016/11/22 ytterbium  aluminium compounds  doping  optical fibre fabrication  optical fibre testing  electron probe analysis  secondary ion mass spectroscopy  laser beams  optical fibre amplifiers  AlSiO:Yb  power 1 kW  efficiency 81  0 percent  slope efficiency  laser output  two-stage master oscillator power amplifier system  time-of-flight secondary ion mass spectrometry  electron probe microanalysis  fibre testing  numerical aperture  homogeneous large-core preform  gas flow control system  high-purity materials  chelate precursor doping technique  large mode area aluminosilicate laser fibre   基于群落生态学视角的天山北坡城市群城市关联分析/Study on Urban Association of the Urban Agglomeration in Northern Slope of Tianshan Mountains Based on Community Ecology[J] 期刊论文  OAI收割 中国人口·资源与环境, 2013, 卷号: 23, 期号: 11, 页码: 115-122 作者:  段祖亮;  刘雅轩;  王昭国;  DUAN Zu-liang;  LIU Ya-xuan   |  收藏  |  浏览/下载：28/0  |  提交时间：2017/12/29 城市关联 种间关联 要素流动 城市功能效率 天山北坡城市群 Urban Association Interspecific Association Elements Fluxion Efficiency Of Urban Function Urban Agglomeration In Northern Slope Of Tianshan mountaIns   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.   Shape and alignment measurement of the heliostat by laser deflectometry (EI CONFERENCE) 会议论文  OAI收割 Optical Modeling and Measurements for Solar Energy Systems II, August 13, 2008 - August 14, 2008, San Diego, CA, United states 作者:  Liu H.;  Zhang H.;  Zhang H.;  Liu H.;  Liu H. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 In the solar tower thermal power generation system  such apparatus and corresponding software packages are developed. With the help of these two apparatus  (hexagon)  the precision of the slope angle of the heliostat is the major factor  the heliostat of 1002  for the 1MWe solar tower power plant in Beijing are measured and connected successfully.  which influences the efficiency of the system  consisting of 55 mirror facets of 1.8182 m2  consequently  this angle should be tested accurately. In this paper  the methods based on laser deflectometry are proposed to measure the shape error of the mirror facet and the connected error of the facets   两微米瓦级掺铥短光纤激光器 期刊论文  OAI收割 Chin. Opt. Lett., 2008, 卷号: 6, 期号: 1, 页码: 44, 46 唐玉龙; 杨勇; 程小劲; 徐剑秋 收藏  |  浏览/下载：1891/205  |  提交时间：2009/09/18 光纤激光器  掺铥  短长度  高功率  Laser diode  Slope efficiency  Thulium ion doped silica glass fibers   Diode-pumped continuous wave and Q-switched operation of a c-cut Tm,Ho:YAlO3 laser 期刊论文  OAI收割 opt. express, 2008, 卷号: 16, 期号: 7, 页码: 5075, 5081 Yao Bao-Quan; Li N-Jun; Zheng Liang-Liang; Wang Yue-Zhu; 赵广军; 徐军 收藏  |  浏览/下载：3166/181  |  提交时间：2009/09/24 Pulse energy  Pulse repetition frequency  Room temperature  Slope efficiency   Diode-pumped Q-switched Tm:YAP laser with a pump recycling scheme 期刊论文  OAI收割 laser phys., 2008, 卷号: 18, 期号: 10, 页码: 1128, 1130 Yao B.Q.; Cai Y.; Duan X.M.; Zheng L.L.; Ju Y.L.; Wang Y.Z.; Zhao G.J.; Zong Y.H.; 徐军 收藏  |  浏览/下载：858/135  |  提交时间：2009/09/24 A-O Q-switched  Diode-end-pumped  Diode-pumped  Optical-optical conversion efficiency  Output powers  Pulse width  Q-switched  Repetition rates  Slope efficiencies  Temperature dependencies