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CAS IR Grid
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长春光学精密机械与物... [4]
理论物理研究所 [2]
海洋研究所 [2]
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OAI收割 [9]
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期刊论文 [5]
会议论文 [4]
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MARS: A protein family involved in the formation of vertical skeletal elements
期刊论文
OAI收割
JOURNAL OF STRUCTURAL BIOLOGY, 2017, 卷号: 198, 期号: 2, 页码: 92-102
作者:
Abehsera, Shai
;
Peles, Shani
;
Tynyakov, Jenny
;
Bentov, Shmuel
;
Aflalo, Eliahu D.
  |  
收藏
  |  
浏览/下载:38/0
  |  
提交时间:2017/07/10
Crustacean Mandible
Chitin Fibers
Mars Proteins
Structural Proteins
Tooth Structure
Vertical Elements
Dominants and accumulation of rare earth elements in sediments derived from riparian and depressional marshes
期刊论文
OAI收割
ENVIRONMENTAL EARTH SCIENCES, 2011, 卷号: 62, 期号: 1, 页码: 207-216
作者:
Wang GP (Wang, Guo-Ping)[1,2]
;
Zhao HM (Zhao, Hong-Mei)[1]
;
Yu XF (Yu, Xiao-Fei)[1,2]
;
Wang JA (Wang, Jian)[1]
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2019/01/07
Rare earth elements
Vertical distribution
Accumulation rates
Sediments Wetlands
Large component QCD and theoretical framework of heavy quark effective field theory
期刊论文
OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2006, 卷号: 21, 期号: 28-29, 页码: 5743-5792
作者:
Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
;
Wu, Yue-Liang
  |  
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2012/08/02
Cb-vertical-bar
Bottom Hadron Decays
V-ub
Form-factors
Matrix-elements
Hqeft
Mesons
Renormalization
Transitions
Constants
High-power InGaAs/GaAs VCSEL's two-dimension arrays (EI CONFERENCE)
会议论文
OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Liu Y.
;
Wang L.-J.
;
Wang L.-J.
;
Liu Y.
;
Liu Y.
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
Selectively oxidized InGaAs/GaAs vertical -cavity surface-emitting lasers (VCSEL) array at an emission wavelength of 980nm was reported. A 16 elements array with 200m aperture size (250m center spacing) of individual elements shows a CW output power of 1.21 W at room temperature
resulting in 1 KW/cm2 average optical power density. The device threshold current is 1.32A The lasing peak wavelength is 981.9 nm
the full width at half-maximum is 0.7 nm
and the far-field divergence angle is about 17.The characteristics of a single device with a active region diameter of 800m is compared with that of a 2-D array with active region diameter of individual clement of 200m. These two kinds of devices have the same total lasing area. At the same current injection
the single device has a higher threshold and a higher output power than the array. The red shift of single device is more obvious than that of the array's.
High-power InGaAs VCSEL's single devices and 2-D arrays (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Materials and Devices for Optical Communications, November 7, 2005 - November 10, 2005, Shanghai, China
作者:
Sun Y.
;
Wang L.
;
Wang L.
;
Wang L.
;
Liu Y.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
We report on bottom-emitting vertical-cavity surface-emitting lasers (VCSEL's) and laser arrays providing high output powers in the 980-nm wavelength regime. Single devices with active diameters of 500 m show high output powers of 1.95 W at room temperature. Its threshold current is 510 mA
and the maximum spatially averaged optical power density is 0.93 kW/cm2. A 16 elements array with 200m aperture size (250m center spacing) of individual elements shows a CW output power of 1.21 W at room temperature
resulting in a average optical power density of 1KW/cm2. The threshold current of the array is 1.32A and the lasing peak wavelength is 981.9 nm. The distinction of emission spectrums between the single device and the array is discussed.
High-power VCSELs single devices aid 2-D arrays (EI CONFERENCE)
会议论文
OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Liu Y.
;
Wang L.
;
Wang L.
;
Wang L.
;
Liu Y.
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2013/03/25
The high power bottom-emitting vertical-cavity surface-emitting lasers (VCSELs) and laser arrays emitting at 980 nm are reported. Extensive investigations on size scaling behavior of thermal properties of single devices show limits of attainable output characteristics. The maximum continuous wave (CW) output power at room temperature of single devices with aperture size up to 500 m is as high as 1.95 W. The key characteristics such as maximum output power
wavelength and thermal resistance are discussed. The bottom-emitting arrays of 16 elements and 200 m aperture size of individual elements show output power of CW 1.35 W at room temperature. The far-field angle is below 17 for all driving current
which is very favorable for focusing or collmating optics.
Theoretical analysis of 980nm high power Vertical External-cavity Surface-emitting Semiconductor Laser (VECSEL) (EI CONFERENCE)
会议论文
OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Wang L.-J.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
By using bottom-emitting structure
we will develop laser diode (LD) pumped 980 nm VECSEL with active region of InGaAs/GaAsP/AlGaAs system. Because the thickness of barrier layer and absorption layer exceed that of quantum well
single well approximation model (KP method) can be used to calculate the band structure of VECSEL. The Schrodinger equation of finite deep potential well can be adopted to calculate the energy level structures of electron
heavy and light holes. According to the transition selection rule
we theoretically obtained the emitting wavelength of VECSEL and calculated quasi-Femi energy of valence band and conduction band based on the analysis of energy level structure of electron and holes. By analyzing the gain of strained quantum wells
we calculated the gain of VECSEL using transition matrix elements of electron
heavy and light holes. We give out the threshold gain
output power and other characteristic parameters. We will study the configuration of VECSEL and pumping scheme. We designed external cavity mirror
active region and bottom-emitting structure. A LD-pumped vertical external cavity surface-emitting laser whose output power is greater than 1.0 W can be predicted.
HQEFT as a large component QCD and comments on the incompleteness of HQET
期刊论文
OAI收割
MODERN PHYSICS LETTERS A, 2003, 卷号: 18, 期号: 19, 页码: 1303-1316
作者:
Wu, YL
;
Yan, YA
;
Zhong, M
;
Zuo, YB
;
Wang, WY
  |  
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2012/08/29
Quark Effective Theory
Effective-field-theory
Transition Form-factors
Cb-vertical-bar
Heavy-quark
Matrix-elements
Wave-functions
Decays
Mesons
Hadrons
Vertical transferring process of rare elements in coral reef lagoons of Nansha Islands, South China Sea
期刊论文
OAI收割
SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 1998, 卷号: 41, 期号: 1, 页码: 42-48
作者:
Song, JM
;
Li, PC
  |  
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2010/12/22
Rare Elements
Vertical Flux
Transferring Form
Coral Reef Ecosystem Of Nansha Islands