Abstract
The Zn/Er/Yb:LiNbO3 and Er/Yb:LiNbO3 crystals were grown by the Czochralski technique. The laser characteristics of 1.54μm emission were predicted based on the Judd–Ofelt theory, and the intensity parameters Ωt (Ω2=7.23×10−20cm2, Ω4=3.15×10−20cm2 and Ω6=1.43×10−20cm2) were obtained. The stimulated emission cross sections (σem) at 1.54μm emission in Zn/Er/Yb:LiNbO3 were calculated based on the McCumber theory and the Füchtbauer–Ladenburg theory. The gain cross section spectrum of Zn/Er/Yb:LiNbO3 crystal was also investigated. Under 980nm excitation, a lenghthening lifetime of 1.54μm emission and an enhancement of green upconversion emission were observed for Zn/Er/Yb:LiNbO3 crystal. The studies on the power pump dependence and the upconversion mechanism suggested that both green and red upconversion emissions were populated via the three-photon process, and Zn2+ ion tridoping increases the probability of cross relaxation process between the two neighboring Er3+ ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
