Dissertation > Excellent graduate degree dissertation topics show

LD Pump Nd:GdVO4 1.34μm and Frequency-doubled Laser

Author: PengZuoZuo
Tutor: LiuJie
School: Shandong Normal University
Course: Optics
Keywords: Diode-pumped Nd: GdVO4 KTP Intracavity frequency doubling Acousto-optic Q
CLC: TN248
Type: Master's thesis
Year: 2005
Downloads: 173
Quote: 1
Read: Download Dissertation

Abstract


Laser diode-pumped solid-state lasers (DPSL) due to the overall high efficiency, long life, good beam quality, all-solid, simple and compact structure, small size, light weight advantages in the fields of military, medical, industrial, and scientific research a wide range of applications. In the case of a high power laser crystal will generally absorb the pump light generated by the thermal effect, and directly affect the main properties of the laser, and the heat induced cracking due to thermal stress generated also limits the laser crystal can withstand the maximum of the pump power and the application range. In recent years, due to the Nd: GdVO 4 laser crystal and Nd: YVO 4 as excellent laser performance and Nd: YAG as a high thermal conductivity, is obtained a wide range of applications. 1.34μm band due to the safe area of ??the human eye and is consistent with the the silicon fiber transmission window has a very broad application in the field of medical, communications, optical sensing and positioning. The to get 671nm red output nonlinear crystal KTP intracavity frequency doubling 1.34μm can replace argon ion laser and the price is expensive, inefficient, complex equipment krypton ion lasers in a wide range. Q-technology can be extremely high pulse peak power and narrow pulse width, pulse laser can be widely used in the medical, distance measurement, processing, photopolymerization, underwater communication, the measurement of air pollution in various fields. In this thesis, new LD end-pumped Nd: GdVO 4 crystal lasers as the main object of study, investigated 1.34μm continuous spread acousto-optic Q-output performance, and its nonlinear optical frequency transform to obtain the red light output characteristics. The main contents are as follows: laser diode-pumped solid-state lasers and laser diode-pumped solid-state laser materials made brief description of the main characteristics of the advantages of solid-state lasers and LD-pumped laser crystal, and summed up the all-solid-state lasers development prospects and hot, and the papers main content. 2 discusses the influence of the thermal effects of the laser crystal in all aspects of the laser performance. Thermal lens effect, Gaussian beam matrix transform and ABCD law to discuss the impact of thermal lens design parameters mode Nd: YVO 4 crystal, for example, the thermal output of its 1.34μm laser lens focal length to do the study, compared with 1.06μm output. Uses a simple plano-concave cavity design of the output characteristics of the 1.34 μm laser, the cavity length is 3cm, the pump power of 7.56W, obtain a stable 1.34 μm maximum continuous wave output power of 2.39W, and the slope efficiency was 36.5% - optical conversion efficiency of 31.7%. 3. Differential saturated from the gain medium in the optical cavity, the study of the pump light and the light of the oscillation light intensity distribution of the laser

Related Dissertations

  1. Research and Design for the Laser’s Power Control System of Laser Direct Writing,TN249
  2. Design of Transducer in PbMoO4 Acousto-optic Device and Its Frequency Property,TN65
  3. Intracavity frequency doubling Raman lasers and coherent anti-Stokes collinear phase matching theory,TN248
  4. Research on the KTP Crystal Applied in THG of Nd:YAN 1319nm Laser,TN248
  5. The Parameter Optimization of Optical Fiber Sensor with ZnO Coating Based on Hybrid Particle Swarm Optimization,TN253
  6. Research on the Optical Waveguide for Guided-wave Acousto-optic Modulator,TN252
  7. The Research on High Pulse Repetition Rate All-solid-state Nd:YLF Laser,TN248
  8. Based on the repetition frequency gradient doping medium flakes laser amplifier thermal effects of characteristics of,TN248.1
  9. Investigation on KTiOPO4 Optical Waveguides Fabricated by Rb/Ba-K Ion Exchange and Ion Implantation,TN252
  10. Study on Performance of All-solid-state 1.34μm and Frequency-doubled Nd:Gd0.63Y0.37VO4 Laser,TN248
  11. Development of LD End-pumped 2W All-solid-state Green Laser,TN248.1
  12. Intracavity Raman Laser Research,TN248
  13. Study on Dispersion Parts by Bragg Modulating in Imaging Spectrometer,O433.1
  14. Investigation of LD-Side-Pumped Highrepetition Rate 670nm RED Laser,TN248
  15. Study on LD Pumped Nd:GdVO4 MOPA Laser,TN248.1
  16. Investigation on the Nonlinear Effect in the Process of the Interaction between Polarized Light and Multi-level Atoms,O431.2
  17. LD end-pumped solid-state laser medium thermal deformation of the crystal face,TN248.1
  18. Study on the Diffraction Efficiency and the Characteristics of Acousto-optic Q-switching in DPL,TN248.1
  19. The Research on All-solid-state Cw Single Frequency Nd: YLF Laser,TN248
  20. Study of the Thermal Lens Compensation for LD End-Pumped Nd:GdVO4,TN248.1
  21. Theoretical and Experimental Study on New Type High-speed Guided-wave Acousto-optic Modulator,TN761

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser
© 2012 www.DissertationTopic.Net  Mobile