Growth and optical properties of Pr,Yb-codoped KY3F10 fluoride single crystals for up-conversion visible luminescence

Kyoung Jin Kim, Anis Jouini, Akira Yoshikawa, Rayko Simura, Georges Boulon, Tsuguo Fukuda

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

We investigate different ways to realize laser emission from (Pr3+) 3PJ=0,1,2 levels by pump sources other than the common argon and excimer-dye laser. The use of infrared (IR) laser diodes in combination with intra- and inter-ionic energy transfer processes (up-conversion) could be an efficient solution towards laser oscillation. Pr3+,Yb3+-codoped KY3F10 (Pr, Yb:KYF) single crystals were successfully grown by the micro-pulling-down (μ-PD) method. The crystals were transparent with a slightly greenish color, 2.0-2.5 mm in diameter, 20-30 mm in length and free from visible inclusions and cracks. Effective segregation coefficients of Pr and Yb in KYF were studied by means of absorption and chemical analysis. Strong visible emission via selective IR pumping with λ=975 nm and up-conversion excitation were obtained in Pr, Yb:KYF at room temperature (RT). Luminescence measurements have been carried out and the decay kinetics of the Pr3+ visible emissions was investigated by room temperature time-resolved spectra.

Original languageEnglish
Pages (from-to)171-177
Number of pages7
JournalJournal of Crystal Growth
Volume299
Issue number1
DOIs
Publication statusPublished - 2007 Feb 1

Keywords

  • A1. Energy transfer
  • A2. Crystal growth from the melt
  • A2. Fluoride
  • B1. 4f-4f transitions
  • B1. Pr and Yb ions
  • B3. Solid-state laser

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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