Passively Mode-locked Diode-pumped Yb:CaF2 Oscillator

  • Author / Creator
    Yu, Yang
  • Passively modelocked diode-pumped solid-state lasers based on semiconductor saturable absorber mirrors and Kerr lens mode-locking which have demonstrated good performance in terms of pulse duration, peak power, pulse repetition rates and maintainability. Yb3+:CaF2 has been recognized as a good candidate for a highly efficient high power femtosecond laser. In this thesis, a passively mode-locked diode-pumped Yb3+:CaF2 oscillator has been developed. In the case of the SESAM mode-locking cavity, energetic Q-switched modelocked laser pulses were generated. A Kerr-lens mode-locked oscillator was constructed for continuous-wave modelocking operations by incorporating an additional optical element with an enhanced nonlinear Kerr coefficient, which represents the first such investigation for an Yb3+:CaF2 oscillator to our best knowledge. A 2-pulse per round trip KLM operation was obtained with 970 mW output power at 10 W pump and 164 MHz repetition rate. The output spectrum had a FWHM of 3 nm and centered at 1053 nm.

  • Subjects / Keywords
  • Graduation date
    Fall 2014
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.