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Local structural changes induced by ion bombardment in magnetron sputtered ZnO: Al films: Raman, XPS, and XAS study 会议论文  OAI收割
OCT 17-20, 2017
作者:  Meng, Fanping;  Ge, Fangfang;  Chen, Yuyun;  Xu, Genbao;  Huang, Feng
  |  收藏  |  浏览/下载：5/0  |  提交时间：2021/12/02
Structural amelioration of 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China
作者:  Liu Y.;  Liu Y.;  Wang L.;  Wang L.;  Wang L.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) has an important application in laser display. We constructed and optimized a 920 nm OPS-VECSEL with active region of In0.09Ga0.91As quantum well (QW) system pumped by 808 nm laser diode module. By the finite element method  self-consistent solutions of the semiconductor electronic and optical equations are realized to calculate the characteristics parameters of OPS-VECSEL. The performances of device especially the mode  the threshold and the optical-optical translation efficiency were analyzed by dealing with different number of QWs (1  2 and 3) in one period  QW depth  barrier width  the component and dimension of the non-absorption layer. We chose an improved structure of them. On this basis  we ameliorated the number of QW periods and the simulation showed that in order to obtain high performance device  the choice of the number of QW periods must be cautious. (2013) Trans Tech Publications  Switzerland.  
Tetracyanoquaterrylene and Tetracyanohexarylenequinodimethanes with Tunable Ground States and Strong Near-Infrared Absorption 会议论文  OAI收割
作者:  Zeng, Zebing;  Lee, Sangsu;  Zafra, Jose L.;  Ishida, Masatoshi;  Zhu, Xiaojian
  |  收藏  |  浏览/下载：9/0  |  提交时间：2021/12/02
First-Principles Investigation of Electronic Structural and Optical Properties of Rare Earth Doped beta-Si3N4 Crystals 会议论文  OAI收割
NOV 04-07, 2011
作者:  Qiu, Dong;  Lu, Xuefeng;  Li, Baihai;  Wang, Hongjie;  Qiu, D
  |  收藏  |  浏览/下载：6/0  |  提交时间：2018/01/12
Structure optimization of strap-down inertial navigation system support (EI CONFERENCE) 会议论文  OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者:  Wang J.;  Sun H.;  Sun H.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
In order to meet the requirement of inertial navigation components and minimizing the system's weight  and topological optimization was conducted. Then  topological optimization and size optimization were conducted under conditions of random vibration and impact. Firstly  according to the dynamic characteristics of missile and requirement of inertial navigation system  the structure of inertial navigation support was designed according to types of missile connection and space arrangement of electronic components  the method of transforming multi-loading cases to multi-loading constraints was used to optimizing the size of the support under conditions of random vibration and impact. Comparing to the original support structures  RMS accelerations in installed points reduced by 25.2% under random vibration  the weight of optimal structures reduced by 28.1%  the structures also met the requirement of inertial navigation system under condition of impact. The support structure shows improvements in both dynamic characteristic and light weight comparing with the original one. 2011 IEEE.  
The lightweight design of the inner framework of the opto-electronic stabilization platform based on finite element analysis (EI CONFERENCE) 会议论文  OAI收割
2011 IEEE 18th International Conference on Industrial Engineering and Engineering Management, IE and EM 2011, September 3, 2011 - September 5, 2011, Changchun, China
Zou Q.; Ma H.-L.; Hu Y.; Ding J.-W.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
The airborne opto-electronic stabilization platform should have the characteristics of high requirements for stability  tracking accuracy and lightweight. In order to verify the rationality of the main load-bearing structure  the inner-gimbal  finite element analysis was performed. Because of the poor working conditions of the airborne opto-electronic stabilization platform and the wide range of working temperature variation  -45 C 60 C  according to the actual working environment  air-resistance and temperature were added to the loads of the inner-gimbal in analysis. What's more  based on the analysis results  lightweight design was performed to the initial model and 64.37% of mass was decreased. The remarkable effect was obtained. This research is going to be instructive to design and production of the airborne opto-electronic stabilization platform in the future. 2011 IEEE.  
Optimization and design of the bottom support of the primary mirror chamber in the opto-electronic device (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China
作者:  Zhang G.;  Zhang G.;  Zhang G.
收藏  |  浏览/下载：10/0  |  提交时间：2013/03/25
In the large-diameter opto-electronic device tracking equipment  by full analyzing the support structure of the primary mirror  the primary mirror usually uses the combination of the bottom support and the lateral support. Because both the bottom support and the lateral support are installed on the primary mirror chamber's base plate  after changing the welded structure of the primary mirror chamber structure to the cast structure and improving the stiffness of the primary mirror base plate  the stiffness of the base plate will show in the amount of sloshing of the primary mirror relative to the primary mirror chamber and therefore influences the tracking accuracy of the opto-electronic device. During the assembling and adjusting of the primary mirror in the actual process of working on the project  the amount of sloshing of the primary mirror is reduced significantly. The results show that in working on the primary mirror support  as is found that the amount of sloshing of the primary mirror relative to the primary mirror chamber is comparatively large  the forms and structure stiffness of bottom support and lateral support should be considered  together with that the stiffness of the primary mirror chamber acting as the basis is playing the crucial role. 2011 IEEE.  
Driving techniques for high frame rate CCD camera (EI CONFERENCE) 会议论文  OAI收割
Electronic Imaging and Multimedia Technology V, November 12, 2007 - November 15, 2007, Beijing, China
Guo W.; Jin L.; Xiong J.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
This paper describes a high-frame rate CCD camera capable of operating at 100 frames/s. This camera utilizes Kodak KAI-0340  an interline transfer CCD with 640(vertical)480(horizontal) pixels. Two output ports are used to read out CCD data and pixel rates approaching 30 MHz. Because of its reduced effective opacity of vertical charge transfer registers  interline transfer CCD can cause undesired image artifacts  such as random white spots and smear generated in the registers. To increase frame rate  a kind of speed-up structure has been incorporated inside KAI-0340  then it is vulnerable to a vertical stripe effect. The phenomena which mentioned above may severely impair the image quality. To solve these problems  some electronic methods of eliminating these artifacts are adopted. Special clocking mode can dump the unwanted charge quickly  then the fast readout of the images  cleared of smear  follows immediately. Amplifier is used to sense and correct delay mismatch between the dual phase vertical clock pulses  the transition edges become close to coincident  so vertical stripes disappear. Results obtained with the CCD camera are shown.  
A mechanistic study of CO removal on a small H-saturated platinum cluster 会议论文  OAI收割
MAY 31-JUN 02, 2008
作者:  Zhou ChengGang;  Yao ShuJuan;  Han Bo;  Chen Liang;  Wu JinPing
  |  收藏  |  浏览/下载：4/0  |  提交时间：2021/12/02
Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
Yang W.; Jingxu Z.
收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25
Large-aperture telescope can be used in surveying battlefield  researching landform  searching object  real-time monitoring  imaging  detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object  quantity  geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology  people require larger aperture in optics-electronic (OE) system. By increasing optical aperture  the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture  the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors  such as deadweight  deformation of heat  environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror  precision of the system is ensured. During the designing phase  one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope  the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture  small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope  the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing  then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high  precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper  various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply  which was operated by the Directed Energy Directorate of the Air Force Research Laboratory  Kirtland AFB  NM  USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.