Dissertation > Excellent graduate degree dissertation topics show

Growth and Spectroscopic Properties of(Cr4+:Ca2GeO4)Crystals Co-Doped with Er3+ Ions

Author: BaiHongRui
Tutor: ZengFanMing
School: Changchun University of Science and Technology
Course: Materials Physics and Chemistry
Keywords: flux method Er3+,Cr4+:Ca2GeO4crystal spectral analysis
CLC: O782
Type: Master's thesis
Year: 2012
Downloads: 19
Quote: 0
Read: Download Dissertation

Abstract


Cr4+:Ca2GeO4is a kind of high performance tunable laser crystal. In this paper, the tuning range of Cr4+:Ca2GeO4crystal extend to1600nm in long wave band by adding Er3+ions.Er3+, Cr4+: Ca2GeO4polycrystalline were synthesized by different methods. The powder was analyzed by XRD, DSC-TG analysis and Scanning electron microscopic analysis. Results shown that the alcohol solution is the best choice. The grain size of the powder, lattice constants, crystallinity were calculated; The endothermic and exothermic process and microstructure were investigated. Er3+, Cr4+: Ca2GeO4was grown by flux method. XRD analysis show that the crystal is pure phase without impurities. Surface morphology analysis confirm the cause that hinder the crystal growth. Infrared spectra make sure the chemical bonds and substitution position of doped ions.The excitation and emission spectra indicates that with different doping concentrations, the effect of doping ions are different. The absorption cross section was calculated through measurement of fluorescence lifetime.

Related Dissertations

  1. Generalized Multi-Flux Method for Simulating Directional Radiative Transfer in Participating Media,TK124
  2. The Study on Rhinoceros Horn and Its Imitation,TS932.2
  3. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  4. Design of a Portable Spectral Analysis Digital Storage Oscilloscope,TM935.3
  5. Data Driven Rolling Bearing Fault Diagnosis Research,TH165.3
  6. Periodic fluctuations in interest rates compared with the United States,F837.12;F224
  7. SWATH catamaran Fatigue Analysis and Optimization of a typical node,U674.951
  8. Research on DBS Imaging Technique for MMW Terminal Guidance Radar,TJ761.14
  9. Study on the Interaction of Proteins with Baclofen or γ-Aminobutyric Acid,R96
  10. High-frequency Cycles of the 3rd and 4th Member of Shahejie Formation in Dongying Depression and Its Geological Significance,P618.13
  11. Discharge Plasma Between the Plates of Low Power Generator Developed,O531
  12. Basic Properties and Application of Repeated-root Cyclic Codes,TN918.1
  13. Electrolytic Coloration and Spectral Properties of Natural Fluorite Crystals,O73
  14. Compact cyclotron internal beam measurement technology research,TL542
  15. Study on Typical Halophytic Plant Spectrum Characteristics in the Arid Regions,S793.5
  16. Analysis on Seismic Effect of Super Large Indirect Air Cooling Tower,TU311.3
  17. Structural Strength Assessment Comparison Research on Semi-submersible Platform,U674.941
  18. Study on the Method of the Structural Fatigue Assessment of SWATH,U674.951
  19. The Preparation and Thermoelectrical Investigation of Ca3Co4O9 Single Crystal and Composites,O482.4
  20. Reinforced concrete mega frame structure seismic performance finite element analysis,TU352.11
  21. Dection of sEMG from Extrinsic Hand Muscles Based on Electrode Array,R318.0

CLC: > Mathematical sciences and chemical > Crystallography > Crystal growth > Crystal growth process
© 2012 www.DissertationTopic.Net  Mobile