Highly efficient 1.54 μm emission in Zr/Yb/Er-codoped LiNbO3 crystal.
Codoping with Zr(4+) ions enhances the 1.54 μm emission in Yb/Er:LiNbO(3) crystal by about three times. Optical damage resistant Zr(4+) ion increases the maximum phonon energy of Er:LiNbO(3) host, which is favorable for the nonradiative relaxation from (4)I(11/2) to (4)I(13/2) state (Er). The time decay spectra show that the incorporation of Zr(4+) ions leads to a shortening lifetime of (4)I(11/2) state (Er), increasing the nonradiative relaxation rate of (4)I(11/2)→(4)I(13/2) (Er) in Yb/Er:LiNbO(3). The 1.54 μm emission enhancement is important to telecommunication application.
School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
Yannan
Y
Qian
Rui
R
Wang
Biao
B
Wang
Chao
C
Xu
Lili
L
Xing
Yanling
Y
Xu