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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序提交时间升序提交时间降序题名升序题名降序作者升序作者降序 基质去除型0.6瓦半导体薄片激光器 会议论文 中国广东深圳 张鹏; 戴特力; 伍瑜; 倪演海; 周勇; 秦莉; 梁一平; 范嗣强 收藏  |  浏览/下载：42/0  |  提交时间：2013/03/19 半导体薄片激光器  基质去除  高功率  光束质量   Synthesis, characterization, and luminescent properties of a red-emitting Europium complex (EI CONFERENCE) 会议论文 1st International Conference on Energy and Environmental Protection, ICEEP 2012, June 23, 2012 - June 24, 2012, Hohhot, China Zhang L.; Li B.; Lv G. 收藏  |  浏览/下载：71/0  |  提交时间：2013/03/25 a fluorine functionalized 1  10-phenanthroline ligand  3-ethyl-2-(2- fluorophenyl) imidazo[4  5-f]1  10-phenanthroline(EFPIP) and the corresponding red-emitting Eu(III) complex Eu(DBM)3(EFPIP) (DBM = dibenzoylmethanate) was synthesized and the photophysical properties and electroluminescent(EL) performances were researched. When Eu(DBM) 3(EFPIP) was used as emitting material in organic devices  the maximum efficiency and luminance of red emission achieved from the EL device with the configuration of ITO/m-MTDATA (30 nm)/NPB (20 nm)/x wt% Eu(DBM) 3(EFPIP) doped in CBP (30 nm)/Bphen (20 nm)/Alq3 (20 nm)/LiF (0.8 nm)/Al were 3.6 cd/A and 563 cd/m2  respectively. Compared with the previously reported devices based on methyl or chlorine substitute Eu(III) complexes  the EL performances of the device using Eu(DBM)3(EFPIP) as an emitter was significantly enhanced due to the introduction of fluorine. (2012) Trans Tech Publications  Switzerland.   An image matching algorithm based on sub-block coding (EI CONFERENCE) 会议论文 2nd International Workshop on Computer Science and Engineering, WCSE 2009, October 28, 2009 - October 30, 2009, Qingdao, China Feng Y.; Li S.; Dai M. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In order to improve the speed of matching algorithm and simplify the processing of existing sub-block coding matching  a new template matching method combined local gray value encoding matching and phase correlation is proposed. Matching process is divided into rough matching and fine matching. Rough matching divides the image into certain size blocks called R-block  sums the gray value of each R-block pixel  encodes the R-block according to the gray value distribution of R-block with the adjacent R-block  and matches by step between the template and each search sub-image. Then  fine matching results are obtained using phase correlation according to initial match parameters. The time complexity of the proposed method is (M2) .The new algorithm is faster than traditional algorithm by two orders of magnitude  and the speed has improved twice compared with existing sub-block coding method. Experiments demonstrate that the new algorithm is robust to the linear transformation of pixel grey value and image noise  and it also has the stability of small-angle rotation. 2009 IEEE.   Shape and alignment measurement of the heliostat by laser deflectometry (EI CONFERENCE) 会议论文 Optical Modeling and Measurements for Solar Energy Systems II, August 13, 2008 - August 14, 2008, San Diego, CA, United states Xu W.; Lu Z.; Liu H.; Zhang H.; Ni Z. 收藏  |  浏览/下载：13/0  |  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   Study on LD-pumped Nd:YAG laser cutter (EI CONFERENCE) 会议论文 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Cui J.; Zhao J.; Fan Z.; Zhao C.; Bi Y.; Zhang J.; Niu G.; Shi Z.; Pei B.; Zhang G.; Xue Y.; Qi Y. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 The theory of laser cutter and the technology neck is analyzed. We can conclude that it is almost impossible to deal with the waste thick silicon wafers which are yielded in producing silicon wafers by conventional eroding or diamond cutting  when the cutting velocity equals 100mm/min  while it is also unperfected with ecumenical laser cutter without good beam quality or precise laseroptics system. It is represented that high average power and high repetition rate laser with good beam quality and precise laseroptics system are pivotal to obtain excellent cutting effect such as thick groove depth  double-layer 0.75mm thick silicon wafer can be penetrated.. The cross section is fine and the groove is narrow  rapid cutting speed  the cutting quality meets the expecting demand.  fine kerf section without considering the effect of technique. Considering laser medium thermal lens effect and thermal focal length changing with pumping power  using plano-convex high reflectivity mirror as the back cavity mirror to compensate the heat lens influence  a /4 waveplate to compensate heat -induced birefraction  utilize the Nd:YAG self- aperture effect  more than 50 W average power 1.064 um IR output is obtained with beam quality factor (M2) equals 3.19. Through the LD-Pumped Nd:YAG laser cutter we developed with short focus length negative spherical aberration focusing lens  double axis linear step motor positioning system  suitable beam expander multiplying factor  appropriate diameter of exit beam aperture  proper repetition rate  when the cutting velocity equals 400mm/min  0.75mm thick silicon wafer can be penetrated   Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Cui J.; Fan Z.; Zhao C.; Zhang J.; Niu G.; Shi Z.; Pei B.; Zhang G.; Xue Y. 收藏  |  浏览/下载：24/0  |  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.