Dissertation > Excellent graduate degree dissertation topics show

The Nonlinear Optical Properties of Fuorenyl-based Chromophores

Author: DongShuGuang
Tutor: SongZuoLin
School: Suzhou University
Course: Optics
Keywords: time-resolved pump-probe technique optical power limiting experiment fuorenyl-based chromophores Z-san PO Z-scan nonlinear optics transient thermally induced nonlinear temperature dynamics process
CLC: O437
Type: Master's thesis
Year: 2011
Downloads: 12
Quote: 0
Read: Download Dissertation


Nonlinear optics, as a fruitful and interesting branch in optics, emerged soon after the operation of the first ruby laser. Many scientists are working for nonlinear measurement techniques and nonlinear optical materials. In my paper, we research Fuorenyl-based chromophores, which is an important class of blue light-emitting polymer material. There have wide energy gap, high luminous efficiency and good molecular functionalities. So these can been widely used in flat panel display (PLEDs), solar cells, biological and chemical sensors. We choose two of Fuorenyl-based chromophores, and research their nonlinear features. The main research works are listed below:The nonlinear mechansim of Fuorenyl-based chromophores is determined by using time-resolved pump-probe technique. We found that adopted energy-level model of two-photon absorption induced excited stated absorption to explain the experimental results well. Due to the Fuorenyl-based chromophore obtain symmetrical molecule structure, which have the ability of push (pull) electron. This structure is helpful for delocalized electron to accompany with the electric field of the input laser beam, so they always have large two-photon nonlinear optic parameters. In addition, the chromophore has been studied by using optical power limiting experiment. The result indicated that the molecule has good optical power limiting property.As one of the first disussed nonlinear optical mechanisms, thermal effect is always existent when the laser pulses propagate through nonlinear optical materials. In paper, we have been discussed the transient thermally induced nonlinear characteristics of the liquor by using PO Z-scan technique. Finally, we discovered the relation of physical parameters and Z-scan curve. At the same time, the different mechansims could alter Z-scan curve figure. In addition, investigation of the temperature dynamics process in the liquor of Fuorenyl-based chromophore by using correlation Z-scan technique under ns laser pulse excitation. Afterwards we achieve physical parameters. Then based on the numerical calculation, we achieved the spatial and temporal changes of temperature.

Related Dissertations

  1. Cough Powder treatment of chronic cough Compatibility Law,R256.11
  2. Study on Antioxidant Components of Tibetan Medicine Sanguo Tang San,R29
  3. The Clinical Study on Anginapectoris of Coronary Heart Disease Treated with CHAI-HU-SHU-GAN-SAN,R259
  4. Study of Zheng Music He Huan Ling in Ancient Score Xian Suo Bei Kao in Qing Dynasty,J632.32
  5. Study on Optical Difference-frequency Generation of Mid-infrared Laser and Terahertz Radiation,TN241
  6. Study on Planning and Implementation of the "San-jiu" Reconstruction in Zengcheng,TU984.114
  7. Changes of Sinoatrial Node and Ventricular Conexin43 of Cerebral Ischemia Rats,R743.3
  8. Studies on the Active Fraction of Danggui Shaoyao San,R284
  9. Research on Security Scheme for the Integration of SAN and NAS,TP393.08
  10. Design and Applications of a Network Storage Management Software Based on Nas,TP311.52
  11. Design and Implementation of mobile intelligent video surveillance in the 3G environment,TN929.5
  12. Clinicle Observation on the Treatment of Warming Yang Calming the Wind and Resolving Phlegm in the Therapy of Spasticity for Stroke Patients,R255.2
  13. Tong Qiao Huo Xue Tang Qi Stagnation Type of Treatment with Ventilation San Efficacy of Sudden Deafness,R276.1
  14. The Research of "Xi Hu Er Ji",I207.41
  15. Design and Realization of Environmental Video Frequency Surveillance System,TP277
  16. \,H131
  17. \,H141
  18. The Study of Characterization in Jian Deng San Hua,I207.41
  19. On "Yong Le Da Dian Xi Wen San Zhong",I207.37
  20. Design Program of Data Center Storage and Backup,TP333
  21. Intervention Treatment and Effection Observation in Bleeding after LEEP of CIN,R737.33

CLC: > Mathematical sciences and chemical > Physics > Optics > Nonlinear optical ( light and matter)
© 2012 www.DissertationTopic.Net  Mobile