中国科学院机构知识库网格系统: 检索

Dynamics modeling and simulation analysis for rotorcraft aerial manipulator system 会议论文 OAI收割
36th Chinese Control Conference, CCC 2017, Dalian, China, July 26-28, 2017
作者: Li Q(李琦); Meng XD(孟祥冬); He YQ(何玉庆); Gu F(谷丰); Han JD(韩建达)

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收藏 | 浏览/下载：25/0 | 提交时间：2017/11/15

Aerial manipulation overall dynamics mass-inertia parameters gain schedule

Effect of dehydration techniques on the fluorescence spectral features and OH absorption of heavy metals containing fluoride tellurite glasses 期刊论文 OAI收割
journal of non-crystalline solids, 2012, 卷号: 358, 期号: 4, 页码: 788-793
作者: Wang, P. F.; Li, W. N.; Peng, B.; Lu, M.

收藏 | 浏览/下载：26/0 | 提交时间：2015/06/29

Dehydration Tellurite glasses FTIR spectra OH absorption Gain parameters

The effects of indium segregation on the valence band structure and optical gain of GaInAs/GaAs quantum wells 期刊论文 OAI收割
Physica E-Low-Dimensional Systems & Nanostructures, 2009, 卷号: 41, 期号: 9, 页码: 1656-1660
S. D. Wu, Z. Huang, Y. Uu, Q. F. Huang, W. Guo and Y. G. Cao

收藏 | 浏览/下载：26/0 | 提交时间：2012/11/06

Indium segregation Optical gain Valence band structure Quantum well molecular-beam-epitaxy surface segregation lasers subbands parameters growth atoms gaas

The effects of indium segregation on the valence band structure and optical gain of GaInAs/GaAs quantum wells 期刊论文 OAI收割
Physica E-Low-Dimensional Systems & Nanostructures, 2009, 卷号: 41, 期号: 9, 页码: 1656-1660
S. D. Wu, Z. Huang, Y. Uu, Q. F. Huang, W. Guo and Y. G. Cao

收藏 | 浏览/下载：22/0 | 提交时间：2012/11/06

Indium segregation Optical gain Valence band structure Quantum well molecular-beam-epitaxy surface segregation lasers subbands parameters growth atoms gaas

Analysis of laser jamming to satellite-based detector (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者: Guo L.-H.; Guo R.-H.; Wang S.-W.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

The reconnaissance satellite communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain so laser disturbing satellite detector is possible. In order to determine its feasibility the theoretical analyses and experimental study are carried out in the paper. Firstly the influence factors of laser disturbing satellite detector are analyzed in detail which including laser power density on the surface of the detector after long distance transmission and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit but dependence on the following parameters: laser average power in the ground laser beam quality tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally using the theoretical model the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2 which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser even decrease laser average power it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.

Fabrication and testing of hard X-ray hourglass lenses (EI CONFERENCE) 会议论文 OAI收割
Micro and Nano Technology - 1st International Conference Society of Micro/Nano Technology, CSMNT, November 19, 2008 - November 22, 2008, Beijing, China
作者: Zhu Y.; Wang W.; Wang W.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

Based on the refraction theory of the lens the SU-8 photoresist hard X-ray hourglass lenses with three different structure parameters are fabricated. The mask-back exposure technique is introduced to fabricate the lenses. The focusing performance of this device is tested at Beijing Synchrotron Radiation Facility (BSRF). At the distance of 1.65m from the lenses an obviously focusing performance in one dimension is observed. The relative intensity of the lenses with the largest gain is about 217.7 the gain of the lens is about 1.15 and the dimension of the focus is about 33m. The focusing performance of this device can be improved through the developing of the mask-back exposure technique. 2009 Trans Tech Publications Switzerland.

Investigation of optical and EPR spectra of ZnO : V3+ crystal 期刊论文 OAI收割
Spectroscopy and Spectral Analysis, 2007, 卷号: 27, 期号: 9, 页码: 1689-1691
W. L. Feng; X. X. Wu; W. C. Zheng

收藏 | 浏览/下载：22/0 | 提交时间：2012/04/13

optical spectra electron paramagnetic resonance (EPR) crystal field theory ZnO : V3+ electron-paramagnetic-resonance spin-hamiltonian parameters defect structures room-temperature zno impurities emission ions gain fe3+

Theoretical results of vertical external cavity surface emitting laser (VECSEL) (EI CONFERENCE) 会议论文 OAI收割
IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics, Sep 18 - 22 2006, Shanghai, China
作者: Qin L.

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

We calculate the characteristic parameters of 980nm infrared vertical external cavity surface emitting laser with the KP method and give the result of the relative longitudinal confinement factor threshold gain and output power. 2006 IEEE.

Spectroscopic investigations of Er3+ doped Bi2O 3 -B2O3 -SiO2 glass (EI CONFERENCE) 会议论文 OAI收割
ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China
作者: Chen B.; Wang X.; Wang X.; Wang X.; Wang C.

收藏 | 浏览/下载：79/0 | 提交时间：2013/03/25

From the optical absorption measurements the Judd-Ofelt parameters were computed using Judd-Ofelt theory. According to the radiative lifetime obtained from the Judd-Ofelt parameters and the measured lifetime the 1.5m quantum efficiency was calculated. The quenching effect of OH upon the lifetime of 1.5m emission was investigated. From the absorption sideband measurement of glass host the value of optical band gap was estimated. The McCumber theory was used to calculate the stimulated emission cross-section and in approximate agreement with experimental one if the emission spectrum could be obtained accurately. The gain coefficient spectra were computed.

Research on the radiometric calibration of TDI CCD remote camera (EI CONFERENCE) 会议论文 OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
Liu Y.-X.; Hao Z.-H.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

The radiometric calibration of the Time delay and integration Charge-coupled Device (TDI CCD) imaging system is a necessary part in the manufacturing TDI CCD camera. The radiometric calibration of the TDI CCD remote sensing camera is done in the State Key Laboratory of Applied Optics. The integration sphere is used for simulating different radiance which is decided by the different sun vertex angle and different reflectivity of the ground. The parameters of the gain and stage of the TDI CCD remote sensing camera are given through the analyzing of outcome of the experiment. The outcomes are used in the practice and the errors are discussed in the end of the experiments.