Dissertation > Excellent graduate degree dissertation topics show

Er3+/Yb3+ Codoped Double-clad Fiber Cavity Laser

Author: RenFang
Tutor: XiangWangHua
School: Tianjin University
Course: Photonics technology
Keywords: Fiber lasers Ring cavity Er3 / Yb3 co-doped fiber Double-clad Semiconductor saturable absorber mirror Passively mode-locked Q- Harmonic mode-locking
CLC: TN248
Type: Master's thesis
Year: 2010
Downloads: 46
Quote: 0
Read: Download Dissertation

Abstract


With the introduction of cladding-pumped fiber laser pulse peak power and single pulse energy have been greatly improved . Double-clad fiber lasers while maintaining the small size of fiber lasers , compact , and can take advantage of cheap multimode high-power LD as the pump source , which makes it the best choice for high power laser output . Passively mode-locked fiber laser using nonlinear polarization rotation effect equivalent to fast saturable absorber in the cavity to produce one of the effective methods of self- amplitude modulation clamping mechanism in recent years to generate ultrashort pulses . In this paper, 3 / Yb 3 co-doped double-clad ring laser theoretical and experimental research of Er , the main contents are as follows : First, the nonlinear polarization rotate passively mode-locked passive mode-locking of Er 3 < / sup > / Yb 3 co-doped double-clad ring laser theory study theoretically Er 3 / Yb 3 co-doped fiber laser produces laser mechanism . Starting from the nonlinear Schrodinger equation , nonlinear polarization rotation effect of passively mode-locked principle . Semiconductor saturable absorber mirror the the passive modelocking Er 3 < / sup > / the Yb 3 co-doped double-clad fiber laser theory study theoretically introduce a semiconductor saturable absorber mirror passive locked pulse formation of two main stages : vibration stage self-starting and stable mode-locked stage . Third, the experimental research on nonlinear polarization rotation passively mode-locked fiber laser with stable performance of the center wavelength of 976nm high power semiconductor laser as the pump source , the use of optical fiber nonlinear polarization rotation effect saturable absorber a clamping mechanism, through adjustment of the pump power and polarization controller state, to achieve a passively Q - Q-switched mode-locked continuous clamping and the operation state of the higher order harmonic mode-locking , wherein the Q- repetition frequency of 7.583 - 32.86KHz, continuous clamping repetition frequency of 8.843MHz, and the second harmonic pulse repetition frequency of 17.49MHz, the third harmonic mode-locked pulse repetition frequency of 24.22MHz .

Related Dissertations

  1. Banach space research base and frame disturbance,O177.2
  2. Study on Fiber Laser Welding of Aluminum Alloy with Filler Wire,TG456.7
  3. All Fiberized Linearly Polarized Pulsed Yb Fiber Laser with High Repetition Rate,TN248
  4. Based on fiber lasers and gas absorption spectrum of the gas sensing,TP212
  5. Brillouin erbium-doped single-mode fiber laser and its application,TN248
  6. Based on domestic devices for high power fiber lasers,TN248.1
  7. Passively mode-locked fiber laser and its dispersion management,TN248.1
  8. Research on Robocup Simulation System and Program Design Based on Reinforcement Learning,TP242
  9. Theoretical and Experimental Studies on Passively Q-switched and Mode Locking Tm:YAP Lasers,TN248.4
  10. Theoretical and Experimental Study of Pulse Pumped Ytterbium-doped Double-clad Fiber Laser,TN248
  11. Q- spectra on the whole results of some studies,O157.5
  12. The Realization and Application of Multi-channel FLRDS Sensor,TP212.14
  13. Study on Ultra-short Optical Pulse Generation,TN929.11
  14. Theory and Simulation of High Power Double Cladding Erbium Ytterbium Co-Doped Optical Amplifier,TN722
  15. Passively Mode-locked Technologies Based on SOA Nonlinear Polarization Rotation,TN248
  16. Study on All-Fiber Q-Switching Laser and Fiber Amplifier System,TN248
  17. Study on Stimulated Brillouin Scattering in Fiber Amplifier,TN248.1
  18. Research of Mode-locking in Fiber Lasers Based on Nonlinear Polarization Rotation and Waveguide Array,TN248
  19. Q- learning in the game of incomplete information machine application,TP18
  20. The Study of Multi-wavelength and Narrow-line-width Fiber Laser Based on Polarization Effects,TN248

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