中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Bulk properties of the medium produced in relativistic heavy-ion collisions from the beam energy scan program 期刊论文  OAI收割
PHYSICAL REVIEW C, 2017, 卷号: 96, 期号: 4, 页码: -
作者:  
Adamczyk, L;  Adkins, JK;  Agakishiev, G;  Aggarwal, MM;  Ahammed, Z
  |  收藏  |  浏览/下载:124/0  |  提交时间:2018/08/30
Modelling windwave driven by typhoon Chan-Hom (201509) in the East China Sea 期刊论文  OAI收割
Theoretical and Applied Mechanics Letters, 2016, 卷号: 6, 期号: 6, 页码: 297-301
作者:  
Zhang HQ(张会琴);  Nie BC(聂冰川)
收藏  |  浏览/下载:88/0  |  提交时间:2017/09/26
Vertical wavenumber spectra of atmospheric ozone measured from ozonesonde observations 期刊论文  OAI收割
Advances in Space Research, 2009, 卷号: 43, 期号: 9, 页码: 1364-1371
Yuan, W.; Xu, J. Y.; Wu, Y. F.; Bian, J. C.; Chen, H. B.
收藏  |  浏览/下载:38/0  |  提交时间:2014/04/30
Investigation of changes in properties of water under the action of a magnetic field 期刊论文  OAI收割
Science in China Series G-Physics Mechanics & Astronomy, 2008, 卷号: 51, 期号: 11, 页码: 1621-1632
X. F. Pang; B. Deng
收藏  |  浏览/下载:25/0  |  提交时间:2012/04/13
The spectral feature analysis of semiconductor thin disk laser (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
作者:  
Li J.;  Wang L.-J.;  Wang L.-J.;  Ning Y.-Q.;  Li J.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The semiconductor thin disk laser is a new type of semiconductor laser. This work gives the basic operation function of semiconductor disk laser  and analyses the heat effect by the experimentally measured photoluminescence spectrum of the laser chip at different pump power and different temperature. We can see that: with increasing pump power  the thermal effects of the gain material becomes seriously and causes the saturation of carrier lifetime  so the electron-hole pair created in the absorbtion layer have no enough time to rate to one of the wells  and the non-radiative recombination happens in the barrier. When the thermal effects becomes stronger  the chip will not lasing. This phenomenon is from the smaller energy offset between barrier and quantum well. We optimize the original structure design and experimental technology. A non-absorbing AlGaAs layer who is transparent to the pumping and laser wavelength is added to confine the carriers in the quantum wells. At the same time a DBR with double reflecting band is induced to improve the absorbing efficiency of the pumping light. The single QW is replaced by the three narrow QWs  This three QWs structure can add the quantum state of QW  increase the recombination probability of carriers in the QWs and reduce the heat effect. The chemical etch equipment is also improved to control the surface unevenness to be within 50 nm.  
Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region 期刊论文  OAI收割
Science in China Series D-Earth Sciences, 2003, 卷号: 46, 期号: 3, 页码: 210-216
Wu, Y. F.; Xu, J. Y.
收藏  |  浏览/下载:23/0  |  提交时间:2014/04/30