Dissertation > Excellent graduate degree dissertation topics show

Research of Double End-pumped Intracavity Frequency Doubling, Third Harmonic of Ultraviolet Laser 355nm

Author: ZouXiaoLin
Tutor: HuangChuYun；YaoYuCheng
School: Hubei University of Technology
Course: Applied Computer Technology
Keywords: UV laser Nonlinear transformation Nd: YVO4 LBO Thermal effects Second harmonic Tripler
CLC: TN248
Type: Master's thesis
Year: 2011
Downloads: 116
Quote: 0
Read: Download Dissertation

Abstract


UV laser has a wide range of applications in the field of industrial micro-machining, industrial parts marking, drilling, scribing, welding, cutting and micro-machining of medical equipment, electronic component package, the three-dimensional molding of micro parts. In addition, in the field of microelectronics, spectroscopy, optical data storage, atmospheric sounding, photobiology, space optical communications, laser-induced the material atomic fluorescence and UV absorption and medical also has a broad application prospects [1-3]. Due to the UV laser of a short wavelength and high photon energy characteristics, and its focused spot can be smaller, while the high energy UV photons directly destroy the molecular bonds of the material, and \\This paper focuses on the UV laser theoretical analysis and experimental research. The advantages of all-solid-state laser and UV laser research background and the research situation. Departure from the laser rate equations, Q-switched laser peak power, pulse energy and pulse time characteristic parameters, Q-switched physical substance of the analysis. Starting from the three-wave coupled wave equations, and analysis of the phase-matching conditions, given the multiplier and frequency conditions of realization of the theory and the second harmonic and third harmonic conversion efficiency. The the gain crystal Nd: YVO 4 nonlinear crystal LBO optical properties. Consider the the gain crystal thermal effects analysis and design of the laser resonator. The content of the research: Design a intracavity frequency doubling and frequency output wavelength of 355nm UV laser, technical indicators as the most important frequency 10-40Hz, M2 ≤ 1.5, the stable operation of power 3-5W, power stability lt; 5% of the laser intend to use the double-ended 30W semiconductor LD pumping the gain crystal Nd: YVO4, acousto-optic Q-produce the 1064nm fundamental frequency light through the first, a nonlinear crystal LBO temperature phase of the class I match produces 532nm second harmonic, and then by the second block of the nonlinear crystal LBO angle phase matching to produce UV 355nm laser class II. There are three main aspects of the study of this topic:: Analysis gain crystal Nd: YVO4 thermal lens effect, close to the fundamental mode beam quality design, baseband about light stable output power 22W laser resonator. : Doubling crystal LBO the LBO crystal dispersion equation solver chosen the I class temperature phase matching temperature value, semi-analytical thermal analysis method for solving nonlinear crystal LBO temperature gradient, adjust the temperature control to achieve second harmonic 532nm output power about the purpose of 10W. : Selection phase matching and frequency crystal LBO II class angle the LBO crystal dispersion equation solving temperature value, temperature control and crystal angle adjustment. Finally achieve the purpose of the stable output power to the 3-5W UV 355nm laser.

Related Dissertations

  1. Research on Electro-optically Q-switched Laser with a High Repetition Rate,TN248
  2. Dowa tilting pad journal bearing lubrication properties of thermal,TH133.3
  3. Research on 1.53μm Eye-Safe Laser Optical Parametric Oscillator,TN248
  4. Research on Micro Machining Technology of Ultraviolet Laser,TG665
  5. A Study on the Elastohydrodynamic Lubrication with Spining and Fluid Starvation,TH117.2
  6. Study of Dynamic Characteristics on Elastic Micro-beam/squeeze Film System Which Considering Heating Effect,TB122
  7. The design and implementation of embedded electronic riot detector,TP368.12
  8. Research on Thermally Boosted Pumped Nd:YVO4 Laser from the High Stark Sublevel of the Ground State,TN248
  9. Thermal Effect on the Dynamic Characteristics of Structures,V216.21
  10. Study of Dynamic Characteristics on Elastic Micro-Beam/Squeeze Film System Which Considering Heating Effect,TH703
  11. Investigations on CW LD Side-Pumped High-Repetition-Rate 266nm UV Laser,TN248
  12. LD-Pumped 355nm Ultraviolet Laser of Continuous,TN248
  13. Development of LD End-pumped 2W All-solid-state Green Laser,TN248.1
  14. Controlling and Synchronizing Chaos in Opticalsecond Harmonics,O437
  15. The Study of All-Solid-State Deep Blue Laser at 457nm,TN248
  16. High-Repetition-Rate UV Light at 355nm Generated by LD CW Side-Pumped Laser,TN248
  17. Nanometer semiconductor thin films of Nd : YVO_4 laser single and dual wavelength laser passively Q,TN248
  18. Research on Thermal Effects in the LD End-pumped Tm, Ho: YLF Solid-state Laser,TN248
  19. Investigation of 880nmLD Pumped High Power CW Single-Frequency Nd: YVO4 Laser,TN248
  20. Panel Flutter Analysis with Thermal Effect Under Unsteady Aerodynamics,V215.34
  21. The Czochralski Growth of Laser Crystal Nd:YVO4 by A Novel Method,O782

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