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Research on beam manipulate and RCS reduction based on terahertz ultra-wideband polarization conversion metasurface
期刊论文
OPTICS COMMUNICATIONS, 2022, 卷号: 502
作者:
Wei, Jingwen
;
Qi, Yunping
;
Zhang, Baohe
;
Ding, Jinghui
;
Liu, Weiming
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2022/03/01
Terahertz polarization
Multi-bit coding metasurfaces
Pancharatnam-Berry phase
Beam manipulate
RCS reduction
Compact dual-wavelength vertical-external-cavity surface-emitting laser with simple elements
期刊论文
Optics Express, 2021, 卷号: 29, 期号: 11, 页码: 16572-16583
作者:
P. Zhang
;
L. Mao
;
X. Zhang
;
T. Wang
;
L. Wang and R. Zhu
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2022/06/13
Ultra-Precision Replication Technology for Fabricating Spiral-Structure Metamaterial
期刊论文
FRONTIERS IN PHYSICS, 2020, 卷号: 8, 页码: 7
作者:
Zhang, Weiguo
;
Zhu, Guodong
;
Zhu, Xiaoqiang
;
Du, Chunlei
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  |  
浏览/下载:52/0
  |  
提交时间:2020/12/01
micron
nano-fabrication
spiral-structure matamaterial
optics
terahertz optics elements
microoptics
ultra-precision fabrication
Standoff gas identification and application with FTIR imaging spectrometer
会议论文
作者:
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2018/12/07
FTIR
hyperspectral imaging
gas identification
data reconstruction
standoff
Standoff gas identification and application with FTIR imaging spectrometer
会议论文
作者:
Wang, Chensheng
;
Sun, Wei
;
Li, Biao
;
Zhang, Zhijie
;
Wang, Peng
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2019/08/19
FTIR
hyperspectral imaging
gas identification
data reconstruction
standoff
Optimal design of SPP-based metallic nanoaperture optical elements by using Yang-Gu algorithm
期刊论文
OPTICS EXPRESS, 2011, 卷号: 19, 期号: 10, 页码: 9512
Zhu, QF
;
Ye, JS
;
Wang, DY
;
Gu, BY
;
Zhang, Y
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  |  
浏览/下载:19/0
  |  
提交时间:2013/09/24
BEAMING LIGHT
TRANSMISSION
PLASMONICS
ARRAYS
LENSES
SLIT
Novel broadband reflectarray antenna with two-type elements for millimeter-wave application
期刊论文
Journal of infrared millimeter and terahertz waves, 2010, 卷号: 31, 期号: 7, 页码: 833-839
作者:
Wang, Xiao-Tian
;
Xue, Qian-Zhong
;
Liu, Pu-Kun
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2019/05/10
Reflectarray antenna
Two-type elements
Broadband
Millimeter-wave
A Double-sided Printed Dipole Array with an Electromagnetic Band-Gap Reflector
期刊论文
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2009, 卷号: 30, 期号: 5, 页码: 423-431
作者:
Xiao, Zhigang
;
Xu, Huiliang
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2015/09/21
Electromagnetic band-gap (EBG)
Double-sided printed dipole (DSPD)
Cavity-backed antenna
Antenna array
Analysis of spectrum narrowing of diode laser bar (EI CONFERENCE)
会议论文
Semiconductor Lasers and Applications III, November 12, 2007 - November 13, 2007, Beijing, China
Deng X.
;
Liu Y.
;
Yin H.
;
Feng G.
;
Gu Y.
;
Wang L.
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2013/03/25
Laser diode bar (LDB) are used increasingly often for many applications
but spectral bandwidth of LDB are generally approximately 2-4nm
far too wide for many demanding applications
e.g. spin-exchange optical pumping
terahertz generation
and lidar. External-cavity feedback can improve the spectral properties of LD or LDB. However
spectrum narrowing of LDB is more difficult than that of LD. Bar curvature (i.e. "smile") produced in the manufacturing process affects the spectrum narrowing greatly. By geometrical optics approach and ORIGIN software
smile which can be corrected by plano-convex cylindrical lens is simulated and the result is in good agreement with experiment. The selection of grating which is also a critical factor of spectrum narrowing will be stated. Finally
an external cavity consisting of fast axis collimator
two plano-convex cylindrical lens and a diffraction grating is used. The scheme is implemented on a 19-element LDB and yields 3-fold reduction in spectral linewidth under the situation that all optical elements in the system which are not optimized. Further
we use a slit in the experiment and analyze the spectrum narrowing of each element in LDB.
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