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CAS IR Grid
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长春光学精密机械与物... [3]
上海光学精密机械研究... [2]
地质与地球物理研究所 [1]
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OAI收割 [6]
内容类型
会议论文 [3]
期刊论文 [3]
发表日期
2019 [1]
2014 [2]
2012 [1]
2008 [1]
2006 [1]
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A review of seismological research on nuclear test monitoring
期刊论文
OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2019, 卷号: 62, 期号: 11, 页码: 4047-4066
作者:
Lin Xin
;
Wang XiangTeng
;
Zhao LianFeng
;
Yao ZhenXing
  |  
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2020/05/18
Location of nuclear test
Discrimination of nuclear test
Magnitude measurement
Yield of explosion
Burial depth
Simultaneous measurement of small birefringence magnitude and direction in real time
期刊论文
OAI收割
opt. lasers eng., 2014, 卷号: 53, 页码: 19
作者:
Liu, Longhai
;
Zeng, Aijun
;
Chen, Beishi
;
Li, Fanyue
;
Zhu, Linglin
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2016/11/28
Real-time measurement
Birefringence magnitude
Birefringence direction
Wollaston prism
Simultaneous measurement of small birefringence magnitude and direction in real time
期刊论文
OAI收割
opt. lasers eng., 2014, 卷号: 53, 页码: 19
作者:
Liu, Longhai
;
Zeng, Aijun
;
Chen, Beishi
;
Li, Fanyue
;
Zhu, Linglin
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2016/11/28
Real-time measurement
Birefringence magnitude
Birefringence direction
Wollaston prism
Stray light analysis of solar photoelectric detection system on space target (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Intelligent System and Applied Material, GSAM 2012, January 13, 2012 - January 15, 2012, Taiyuan, Shanxi, China
Li L.-Y.
;
Wang Y.-F.
;
San X.-G.
收藏
  |  
浏览/下载:141/0
  |  
提交时间:2013/03/25
Most conventional spacious solar photoelectric detection systems suffer from unexpected stray light. This paper demonstrates the effects on photoelectric detection system bring out by stray light. On this foundation
build up evaluation index of stray light system
to search the reasonable programme to eliminating stray light. A detailed telescope system geometry model was created
and scatter models were create for telescope and enclosure components. By the means of designing the structure of main baffle
baffle vane and the coating technology. In order to verify the prosperity of structure that designed
we utilizes software to analysis opto-mechanical model. we utilizes software to analysis opto-mechanical model. The simulations show that point source transmittance of the system is thus reduced by up to two orders of magnitude between 10-8 and 10-10. Meanwhile
the experiment obtains clean detection data which satisfies the system requirements. Stray light has been suppressed effectually
and so measurement precision was improved from detection graphics. (2012) Trans Tech Publications.
Characteristics of ZnMgO-based metal-semiconductor-metal photodetectors (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Photoelectronic Imaging and Detection, September 9, 2007 - September 12, 2007, Beijing, China
作者:
Zhang J.
;
Li B.
;
Li B.
;
Li B.
;
Zhao Y.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
In recent years
ZnMgO semiconductor alloys
with a direct bandgap tunable between 3.37 eV and 7.8 eV
become one of the most suitable materials for the fabrication of ultraviolet detectors. In this paper
we have fabricated metal-semiconductor-metal photodetectors on 1-m thick Zn 0.8Mg0.2O films. The interdigital metal electrodes are 500 m long and 5 m wide with an interelectrode spacing 2 m
5 m and 10 m
respectively. Zn0.8Mg0.2O films were grown on quartz by ratio frequency magnetron sputtering at 500C. Dark current
spectral responsivity and pulse response were carried out for the devices with different finger pitches. All the photodetectors showed the peak responsivity at 330 nm and the ultraviolet-visible rejection ratio (R330 nm/R400 nm) is more than four orders of magnitude at 3 V bias. For the device with 2 m finger pitch
the detectivity was calculated as 4.21011 cm Hz 1/2/W at 330 nm. Furthermore
the transient response measurement for all devices revealed similar rise time of 10 ns. The 90%-10% fall times are 130 ns
170 ns and 230 ns for the devices with different finger pitches of 2 m
5 m and 10 m
respectively..
Grating interferometry method for torsion measurement (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Liu W.
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
Method of grating interferometry was presented for torsion angle measurement
moire fringe generated by two gratings is used in a new field
it breaks through moire fringe's routine application. Measurement principle is described
torsion angle can be gotten by the tilt angle or the width of moire fringe. Different from moire fringe's characteristic information extracting methods in traditional measurement fields
fringe-tilt method and fringe-width method were put forward to extract moire fringe's characteristic information. Fringe-tilt method is on the basis of moire fringe's tilt to acquire torsion angle
uniform formula was built aiming at all positions of two gratings in the coordinates
fringe-width method is on the basis of moire fringe's width to acquire torsion angle
three key problems are given about fringe-width method. Thick
middle and thin moire fringe were collected in experiments and processed by two methods
fringe-width method's result shows that magnitude of boat torsion error is satisfied with that of theoretical precision analysis
and the change rule of torsion error is also same to that of theoretical analysis
the thicker fringe is
the higher precision is
when fringe width arrives to be 1695m
the precision is 1.7"
the thinner fringe is
the lower precision is
when fringe width arrives to be 734.7m
the precision is 6.7". In addition to these
the results of repeatability experiments
sensibility experiments are given. In a word
the measurement principle is right and the precision of fringe processing is also reliable.