Passively Q-switched diode-pumped Yb:YAG laser using Cr4+-Doped garnets

Y. Kalisky, C. Labbe, K. Waichman, L. Kravchik, U. Rachum, Peizhen Deng, Jun Xu, Jun Dong, Wei Chen

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the operation of a diode-pumped Yb:YAG laser passively Q-switched, by Cr4+:YAG, Cr4+:LuAG, and Cr4+:GSGG saturable absorbers. The results presented here are focused towards the design of a passively Q-switched Yb:YAG microlaser. The free-running performance of both rod and a disk Yb:YAG is characterized and experimental parameters such as gain and loss are evaluated. These values, together with the value of the stimulated emission cross section, e.g. σem=3.3×10-20 cm2 were found to fit between our experimental results and an existing numerical model which relates the experimental and physical parameters to the minimal threshold pumping power. Q-switched pulses with maximum peak power of ≈10.4-kW, and energy of ≈0.5 mJ/pulse were extracted with 30 % extraction efficiency.

Original languageEnglish
Pages (from-to)54-65
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4628
DOIs
StatePublished - 1 Jan 2002
Externally publishedYes

Keywords

  • Diode pumped lasers
  • Passive Q-switching
  • Yb:YAG laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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