Open AccessSaturable absorption of Yb3+/Na+ codoped CaF2 crystals at 1050nm
Author(s) -
Li Chai,
Yan Shi,
Xue Ying-Hong,
Qingwen Liu,
Wei Ge,
Qingyue Wang,
Su Liang-Bi,
Xinguang Xu,
Guangjun Zhao,
Jun Xu
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.2966
Subject(s) - saturable absorption , materials science , doping , absorption (acoustics) , crystal (programming language) , laser , q switching , optics , optoelectronics , fiber laser , wavelength , composite material , physics , computer science , programming language
The saturable absorption of Yb3+/Na+ codoped CaF2 crystals at 1050nm has been demonstrated by comparative experiments by inserting the novel Yb3+,Na+:CaF2 crystal with different doping concentrations into a Yb:YAG laser in stable continuous wave operation, which is the cause for the crystals working as the gain material to tend to self-Q-switching at 1050nm. The results show that the dominative element is Yb3+ rather than Na+ for saturable absorption action of the crystals. However, the effect of Q-switching by codoping Na+ into the CaF2 crystals can be greatly improved so that the Yb3+,Na+:CaF2 crystals with optimum concentration and doping ratio can be used as a Q-switching element at 1050nm.