CORC

在结果中检索

CORC

浏览/检索结果: 共13条，第1-10条 帮助

限定条件    
已选(0)清除 条数/页：   排序方式：
A novel method of coherent plane-wave compounding imaging based on compressive sensing 会议论文
IUS2016, 法国图尔
作者:  Song Zhang;  Congzhi Wang;  Hairong Zheng
收藏  |  浏览/下载：30/0  |  提交时间：2017/01/15
Non-Elevation-Focused Probe (NEFP) Designed for Pure Plane-wave Ultrasound Imaging 会议论文
the 2015 IEEE International Ultrasonics Symposium (IUS), TAIWAN
作者:  Congzhi Wang;  Ning Guo;  Yang Xiao;  Weibao Qiu;  Ming Qian
收藏  |  浏览/下载：107/0  |  提交时间：2016/01/27
An Easily-Achieved Time-Domain Beamformer for Ultrafast Ultrasound Imaging Based on Compressive Sensing 会议论文
the 2015 IEEE International Ultrasonics Symposium (IUS), TAIWAN
作者:  Congzhi Wang;  Xi Peng;  Dong Liang;  Yang Xiao;  Weibao Qiu
收藏  |  浏览/下载：15/0  |  提交时间：2016/01/27
Measurement of non-common path static aberrations in an interferometric camera by phase diversity 会议论文
Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 2012
作者:  Yan, Zhaojun;  Herbst, Thomas M.;  Yang, Pengqian;  Bizenberger, Peter;  Zhang, Xianyu
收藏  |  浏览/下载：17/0  |  提交时间：2016/11/24
Cylindrically symmetric vector beams obtained by overlapping optical vortices 会议论文
6th international symposium on advanced optical manufacturing and testing technologies: optical test and measurement technology and equipment
作者:  Yao BaoLi
收藏  |  浏览/下载：10/0  |  提交时间：2013/07/04
Pt supported 3d transition metal oxide films: a reversed model catalysts for low temperature CO oxidation 会议论文
242nd acs national meeting & exposition., 丹佛, 2011-8-28
李微雪
收藏  |  浏览/下载：14/0  |  提交时间：2012/07/09
Carbon chain growth via formyl insertion on Rh and Co catalysts in syngas conversion 会议论文
242nd acs national meeting & exposition., 丹佛, 2011-8-28
赵永慧; 李微雪
收藏  |  浏览/下载：35/0  |  提交时间：2012/07/09
Elastic Sv-wave scattering by an interface crack between a piezoelectric layer and an elastic substrate 会议论文
IUTAM Symposium on Mechanics and Reliability of Actuating Materials, IUTAM Symposium on Mechanics and Reliability of Actuating Materials, Beijing, PEOPLES R CHINA, Web of Science
Gu, Bin; Yu, Shou-Wen; Feng, Xi-Qiao
收藏  |  浏览/下载：5/0
A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
Zhao Y.; Gong Y.; Li S.; Zhang W.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However  the former has the disadvantage of weak intensity distribution controlling ability  and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized  and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE  light beam propagation distance  and the structure of the beam shaping unit  a method of determining the designing parameters is discussed. Using this method  several illumination modes are realized  and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last  and it is proven to be feasible. 2010 SPIE.  
Rigorous vector analysis of diffractive microlens by using of finitedifference time-domain method (EI CONFERENCE) 会议论文
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 22, 2009, Shanghai, China
Liu Y.; Liu H.
收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25
We use finite difference time domain (FDFD) method as rigorous vector analysis model to simulate the focusing process of diffractive microlens (DML). Differing with most analysis model which the near field distributions are calculated by FDTD and then far field are obtained by using of propagation method  we obtain the fields in whole computational space by using of FDTD only. The advantages are that all the results are vector based and the computational time is saved greatly. In this paper  we present two methods to obtain wave amplitude  one is comparison method  and the other is integral method. Depending on wave amplitude in the whole computational space  one can conveniently obtain distributions of electric field intensity and calculate the time-average Poynting vector. We also present the formulation for calculating diffractive efficiency of DML based on time-average Poynting vector which denotes energy flow. As demonstration  a DML is analyzed by using of these algorithms. The time depended graphic results of FDTD show the process of wave propagation. The distribution of electric field intensity illustrates the focusing of the normal incident light. The focus pattern in the focal plane is also show. The diffractive efficiency of the DML is calculated by using of the energy flow method in this paper. The results show the high accuracy and efficiency of the model. 2009 SPIE.  

©版权所有 ©2017 CSpace - Powered by CSpace