机构

• 西安光学精密机械研究... [4]
• 长春光学精密机械与物... [3]
• 地理科学与资源研究所 [2]
• 上海光学精密机械研究... [2]
• 物理研究所 [1]
• 半导体研究所 [1]
• 更多

采集方式

• OAI收割 [13]

内容类型

• 期刊论文 [9]
• 会议论文 [3]
• 学位论文 [1]

发表日期

• 2022 [2]
• 2017 [1]
• 2014 [2]
• 2012 [1]
• 2010 [1]
• 2007 [1]
• 更多

学科主题

• chemistry [1]
• condensed ... [1]
• inorganic ... [1]
• materials ... [1]
• optics [1]
• physical [1]
• 更多

筛选

浏览/检索结果: 共13条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Evaluating the impacts of land use change on ecosystem service values under multiple scenarios in the Hunshandake region of China 期刊论文  OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 卷号: 850, 页码: 14 作者:  Xiao, Yu;  Huang, Mengdong;  Xie, Gaodi;  Zhen, Lin   |  收藏  |  浏览/下载：34/0  |  提交时间：2022/11/09 Equivalent -coefficient method  GeoSOS -FLUS model  Hotspots  Gain and loss matrix  Agro-pastoral ecotones  Hunshandake   Evaluating the impacts of land use change on ecosystem service values under multiple scenarios in the Hunshandake region of China 期刊论文  OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 卷号: 850, 页码: 14 作者:  Xiao, Yu;  Huang, Mengdong;  Xie, Gaodi;  Zhen, Lin   |  收藏  |  浏览/下载：40/0  |  提交时间：2022/11/09 Equivalent -coefficient method  GeoSOS -FLUS model  Hotspots  Gain and loss matrix  Agro-pastoral ecotones  Hunshandake   Preparation and optical properties of TeO2-BaO-ZnO-ZnF2 fluoro-tellurite glass for mid-infrared fiber Raman laser applications 期刊论文  OAI收割 optical materials, 2017, 卷号: 66, 页码: 567-572 作者:  Li, Jie;  Xiao, Xusheng;  Gu, Shaoxuan;  Xu, Yantao;  Zhou, Zhiguang 收藏  |  浏览/下载：47/0  |  提交时间：2017/05/27 Tellurite glasses  Fluoride  Raman gain coefficient  Properties   Spectroscopic properties of Yb3+-doped TeO2-BaO-BaF2-Nb2O5-based oxyfluoride tellurite glasses 期刊论文  OAI收割 chinese physics b, 2014, 卷号: 23, 期号: 9, 页码: 097801 作者:  Lin She-Bao;  Wang Peng-Fei;  She Jiang-Bo;  Guo Hai-Tao;  Xu Shen-Nuo 收藏  |  浏览/下载：30/0  |  提交时间：2015/03/18 Yb  oxyfluoride tellurite glass  spectroscopic properties  gain coefficient   Spectroscopic and thermal properties of Yb3+ doped TeO2-Bi2O3-Nb2O5 based tellurite glasses 期刊论文  OAI收割 journal of luminescence, 2014, 卷号: 153, 页码: 29-33 作者:  Lin, She-Bao;  Wang, Peng-Fei;  She, Jiang-Bo;  Guo, Hai-Tao;  Xu, Shen-Nuo 收藏  |  浏览/下载：26/0  |  提交时间：2015/03/18 Yb3+  Tellurite glass  Spectroscopic properties  Thermal properties  Gain coefficient   Yb3+ doped fluorophosphate laser glasses with high gain coefficient and improved laser property 期刊论文  OAI收割 solid state sciences, 2012, 卷号: 14, 期号: 4, 页码: 550-553 作者:  Wang, P. F.;  Peng, B.;  Li, W. N.;  Hou, Ch. Q.;  She, J. B. 收藏  |  浏览/下载：31/0  |  提交时间：2012/09/04 Fluorophosphate laser glasses  High gain coefficient  Laser property  Hydroxyl absorption coefficient   Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文  OAI收割 Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China 作者:  Liu Y.;  Liu Y.;  Qin L.;  Liu Y.;  Wang L. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 Based on the modified coupled-wave theory  the emission characteristics  including threshold gain  photon density distribution in the cavity  and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m  the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating  we can change the two coupling coefficients  which affect the emission characteristics. For an overall consideration  an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides  the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47%  respectively. 2010 SPIE.   混合碱效应对磷酸盐包边玻璃性质的影响 期刊论文  OAI收割 Chin. Opt. Lett., 2007, 卷号: 5, 期号: 6, 页码: 355, 357 赵凤刚; 汪国年; 胡丽丽 收藏  |  浏览/下载：1288/245  |  提交时间：2009/09/24 磷酸盐玻璃  Mixed alkali effect (MAE)  激光玻璃  Phosphate edge cladding glasses  包边玻璃  Signal gain coefficient  寄生振荡  Laser disc glass  Dissolution rate (DR)   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：74/0  |  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.   Study of removing striping noise in CCD image (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Liu H.;  Liu H.;  Liu H. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Striping noise is the common system noise during formation of image using linear array CCD and has the character of periodicity  directivity and banding distributing. It can be caused by errors in internal calibration devices  or by slight gain/offset differences among the elements that conform the array of detectors. Striping noise covers up useful information in CCD image and brings adverse effect to image interpretation. On the basis of analyzing wavelet decomposed coefficient  the regularities of distribution about striping noise in wavelet coefficient is found  thereby the method of wavelet threshold selection which is suitable to striping noise distribution is put forward. According to Donoho's method about denoising using wavelet  the image including striping noise is processed. Comparing the power spectrum of processed image with the one of original image polluted by striping noise in frequency field  we find pulse brought by striping noise is removed and the goal which reserves image details and reduces stripes is achieved.