Open AccessOptical characteristics of Yb:Y2O3 transparent ceramic
Author(s) -
Yunfeng Qi,
Qihong Lou,
Zhu Hong-Tao,
Jun Zhou,
Junhang Dong,
Yunrong Wei,
Bing He
Publication year - 2007
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.56.2657
Subject(s) - materials science , ceramic , laser , slope efficiency , transparent ceramics , optoelectronics , ytterbium , wavelength , optics , output coupler , thermal conductivity , laser power scaling , doping , composite material , fiber laser , physics , resonator
A new solid-state laser material——YbY2O3 transparent ceramic based on nano crystalline technology and the vacuum sintering (NTVS) method is reported. The manufacture technology, the physical and chemical properties, the energy level split structure and the spectra characteristics of YbY2O3 ceramic media are discussed and compared with those of Yb:YAG single crystal. Further more, with the compact active mirror laser (CAMIL) design, the laser parameters of Yb:Y2O3 ceramic are demonstrated at room temperature. An optimum output power of 10.5W has been obtained under the max imum pumping power of 35 W. Its corresponding slope efficiency was 37.5%. The laser wavelength red-shift was observed with the increasing of the pump power and the reflectivities while the decrease of the radium of output coupler (ROC). In fact, YbY2O3 ceramic is an ideal laser material, it has excellent physical and chemical properties and spectra characteristics comparable with those of the Yb:YAG single crystal. Further more, its thermal conductivity and emission bandwidths are nearly twice those of Yb:YAG, which shows that it is a promising candidate in high power and femto-second pulsed laser applications.