Cooperative up-converted luminescence in Yb,Na:CaF2 cladding waveguides by femtosecond laser inscription

Limu Zhang, Taiyong Guo, Yingying Ren, Yangjian Cai, Mark D. Mackenzie, Ajoy K. Kar, Yicun Yao

Research output: Contribution to journalArticle

Abstract

Cladding waveguides are fabricated in Yb,Na:CaF2 crystal by applying femtosecond laser inscription. Waveguide properties are investigated in terms of guiding behaviors and confocal micro-Raman characterizations. In addition, under 946 nm excitation, visible cooperative up-conversion emissions at 478 nm induced by Yb3+ ion pairs are observed while other visible bands are detected owing to the impurities of Er3+ and Tm3+ ions.
Original languageEnglish
Pages (from-to)8-13
Number of pages6
JournalOptics Communications
Volume441
Early online date16 Jan 2019
DOIs
Publication statusPublished - 15 Jun 2019

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