机构

• 金属研究所 [6]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [7]

内容类型

• 期刊论文 [6]
• 会议论文 [1]

发表日期

• 2010 [1]
• 2005 [2]
• 2003 [2]
• 2002 [1]
• 1997 [1]

学科主题

筛选

浏览/检索结果: 共7条，第1-7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 New phase measurement method for laser rangefinder (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Meng Z.;  Meng Z. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 A new phase measurement method is designed and presented by using the technique of signal shifting phase and the technique of signal multiplication for laser rangefinder. The intensity of laser light is modulated by cosine circuit signal  at the same time the cosine circuit signal is thansformed sine signal by the shifting phase technique. Two signals mentioned above are multiplied by received signal from the target respectively  then being transmitted into signal processor after passing through low band filter respectively. The result of phase-shift between the received signal and sent signal is calculated by means of signal processor and time-counter with double frequency of modulation signal. The proposed system is composed of four units such as control and count unit  emitting and receiving unit of laser light  signal processing unit and result display unit. The two most advantages of proposed system over others are its ability of proper isolation which reduces crosstalk and its independency thermal drift. Theoretical calculations and experimental results have shown the accuracy better than 2 mm. 2010 Copyright SPIE - The International Society for Optical Engineering.   Improved ligand-field theory with effect of electron-phonon interaction 期刊论文  OAI收割 Communications in Theoretical Physics, 2005, 卷号: 43, 期号: 3, 页码: 529-538 D. P. Ma; J. R. Chen 收藏  |  浏览/下载：23/0  |  提交时间：2012/04/14 improved ligand-field theory  electron-phonon interaction  Stokes shift  energy spectrum  thermal shift  g factor  laser crystal gsgg-cr3+  pressure-induced shifts  theoretical  calculations  temperature-dependence  garnet crystals  thermal shifts  r-1 line  spectra  ruby  luminescence   Improved ligand-field theory with effect of electron-phonon interaction 期刊论文  OAI收割 Communications in Theoretical Physics, 2005, 卷号: 43, 期号: 3, 页码: 529-538 D. P. Ma; J. R. Chen 收藏  |  浏览/下载：23/0  |  提交时间：2012/05/17 improved ligand-field theory  electron-phonon interaction  Stokes shift  energy spectrum  thermal shift  g factor  laser crystal gsgg-cr3+  pressure-induced shifts  theoretical  calculations  temperature-dependence  garnet crystals  thermal shifts  r-1 line  spectra  ruby  luminescence   Pressure effects on spectra of tunable laser crystal GSGG : Cr3+ - I: Theory 期刊论文  OAI收割 Communications in Theoretical Physics, 2003, 卷号: 39, 期号: 2, 页码: 249-256 D. P. Ma; J. P. Zhang 收藏  |  浏览/下载：21/0  |  提交时间：2012/04/14 high-pressure effect  line shift  spin-orbit interaction  electron-phonon interaction  d-orbital  coupling between  t(2)(2)(T-3(1))e(4)T(2) and t(2)(3) E-2  tunable laser crystal  thermal-shift calculations  theoretical calculations  energy-spectrum  r-line  chromium photoluminescence  ruby  broadenings  t-4(2)  states  cr-3+   Microscopic theory of pressure effects on the energy spectra of the tunable laser crystal Gd3Sc2Ga3O12 : Cr3+ 期刊论文  OAI收割 Physical Review B, 2003, 卷号: 68, 期号: 5 D. P. Ma; J. P. Zhang 收藏  |  浏览/下载：14/0  |  提交时间：2012/04/14 line thermal-shift  theoretical calculations  temperature-dependence  garnet crystals  excited state  ground-state  cr3+ ions  r-lines  ruby  cr-3+   Thermal shifts and electron-phonon interactions of T-4(2) and T-4(1). broad bands for ruby 期刊论文  OAI收割 Communications in Theoretical Physics, 2002, 卷号: 37, 期号: 2, 页码: 247-252 D. P. Ma; N. Ma; J. R. Chen 收藏  |  浏览/下载：14/0  |  提交时间：2012/04/14 crystal fields  optical spectral bands  electron-phonon interaction  thermal expansion  thermal shift  theoretical calculations  high-pressure  field  spectroscopy  spectra   Optical spectra of MgO:Cr3+ and MgO:V2+ and their pressure-induced shifts 期刊论文  OAI收割 Journal of Luminescence, 1997, 卷号: 71, 期号: 4, 页码: 329-339 D. P. Ma; D. E. Ellis 收藏  |  浏览/下载：17/0  |  提交时间：2012/04/14 crystal field theory  lattice relaxation  density functional theory  transition metal impurity  optical absorption  MgO:Cr3+  MgO:V2+  line thermal-shift  theoretical calculations  r-line  reflectivity  spectra  absorption-spectra  raman-spectra  dependence  impurities  ruby  mgo