Abstract
The infrared photoluminiscence and optical absorption of Nd 3+ in KTP single crystals and in those co-doped with Al, Na and W have been studied. Characteristic emission band sets in 1030–1150 and 1300–1500 nm corresponding to the 4F 3/2→ 4I 11/2 and 4F 3/2→ 4I 13/2 transitions, respectively, have been observed. The excitation spectra of these bands show the splitting of the 4F 3/2 multiplet in two sublevels. The excitation spectrum of Nd in KTP only shows the contribution of one type of Nd center, the energy difference between the 4F 3/2 sublevels of this center is 183 cm −1. Nd 3+ in the two slightly different titanium lattice sites is likely contributing to this spectrum. In crystals co-doped with Al the 4F 3/2 splitting is larger, namely 202 cm −1 but still a single center is observed. The co-doping with Na or W induces the presence of additional new centers as well as new emission bands. It is inferred that Na–Nd and W–Nd pairs have been formed. W enhances the optical absorption cross section of Nd 3+ in KTP.
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.
