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	Experiment analysis of CO2 laser disturbance on long-wave infrared HgCdTe detector (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者: Wang S.-W. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 Theoretical analysis and experimental study were carried out on the high-power CO2 laser disturbance to long-wave infrared (LWIR) HgCdTe detector in this paper. Based on the practical parameters of experiment the theoretical model of temperature-rise is adopted to calculate the variation of the temperature with the time and the power of laser for laser irradiation on the detector. After that the damage threshold is 110W/cm2. This experimental phenomenon well agrees with the results predicted by the theoretical calculation. The conclusions have a certain reference value for the laser defense of detector. 2011 IEEE. the high-power laser damage mechanism to LWIR detector is discussed and compares with the experimental results of laser irradiation the detector on the distance of 15km. The theoretical and experimental results demonstrate that the interference threshold of the detector is 20.5W/cm 2
	UV-VUV spectral irradiance responsivity calibration for space remote sensing spectroradiometer (EI CONFERENCE) 会议论文 OAI收割 Advanced Materials and Devices for Sensing and Imaging III, November 12, 2007 - November 14, 2007, Beijing, China 作者: Yu H. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 In order to overcome the irradiance responsivity calibration troubles caused by the weak response of most spectral radiometers in ultraviolet band and poor ratio of signal to noise and to meet special calibration condition for some remote sensing spectroradiometers in space a spectral irradiance responsivity calibration unit based on parallel light illumination mode is established it is composed of a 150W deuterium lamp and a spherical mirror. The calibration unit gets the output standard value of spectral irradiance by irradiance transfer this way avoids the spectral reflectance measurement difficulty of the spherical mirror. A flight spectral radiometer model used for space remote sense was calibrated in range from 160nm to 300nm the calibration error of spectral irradiance responsivity is 4.7%. Some factors which contribute to calibration uncertainties are discussed.
	Scale invariant property in Walsh frequency domain and a multifractal model for geophysical data processing in GIS environment 期刊论文 OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2007, 卷号: 50, 期号: 6, 页码: 1884-1893 作者: Li Qing-Mou; Cheng Qiu-Ming; Liu Shao-Hua \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2018/09/26 W-A model multifractal filter scale invariant property texture analysis mineral potential mapping
	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.; Wang L.-J.; Ning Y.-Q.; Qin L. 收藏 \| 浏览/下载：23/0 \| 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.
	Theoretical studies on the gyromagnetic factors for Nd3+ in Scheelites-type ABO(4) compounds 期刊论文 OAI收割 Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences, 2004, 卷号: 59, 期号: 12, 页码: 947-951 S. Y. Wu; H. N. Dong 收藏 \| 浏览/下载：25/0 \| 提交时间：2012/04/14 EPR compounds (A = Cd B = Mo crystal-fields and Spin Hamiltonian Ca W) Nd3+ Pb Scheelite-type ABO(4) Ba stimulated raman-scattering crystal-field superposition-model tungstate crystals optical-properties liyf4 crystal spectra parameters cawo4 luminescence