Abstract

Codoping with Zr4+ ions enhances the 1.54 μm emission in Yb/Er:LiNbO3 crystal by about three times. Optical damage resistant Zr4+ ion increases the maximum phonon energy of Er:LiNbO3 host, which is favorable for the nonradiative relaxation from I11/24 to I13/24 state (Er). The time decay spectra show that the incorporation of Zr4+ ions leads to a shortening lifetime of I11/24 state (Er), increasing the nonradiative relaxation rate of I11/24I13/24 (Er) in Yb/Er:LiNbO3. The 1.54 μm emission enhancement is important to telecommunication application.

© 2012 Optical Society of America

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