Open AccessInvestigation on pumping dynamics and pulsed energy storage performance of Yb ions
Author(s) -
Yu Hai-Wu,
Xu Mei-Jian,
Duan Wen-tao,
Sui Zhan
Publication year - 2007
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.4158
Subject(s) - lasing threshold , materials science , laser , amplified spontaneous emission , ion , active laser medium , rate equation , optical pumping , ytterbium , excitation , energy storage , doping , diode , spontaneous emission , atomic physics , optoelectronics , optics , laser power scaling , physics , power (physics) , thermodynamics , kinetics , wavelength , quantum mechanics
Based on the energy structure of quasi-three-level Yb-ion, the pumping and lasing rate equations are set up. The pumping dynamics of Yb-ion is investigated analytically and numerically, which includes the pumping excitation efficiency, the minimum pumping intensity, and the stored energy extraction efficiency. The laser performances of three typical Yb-doped laser materials are compared, i.e., Yb:S-FAP, Yb:YAG and Yb:FP-glass. Based on the criterion of amplified spontaneous emission (ASE), the design principles of pulsed energy-storage Yb lasers are investigated specifically, which includes the optimum thickness and doping concentration of the gain medium. Finally, based on our model, the baseline parameters are presented for a 100J-class diode-pumped solid-state laser based on either Yb:S-FAP or Yb:YAG. This paper would be helpful for designing the pulsed energy-storage Yb-based DPSS lasers.
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