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Spectroscopic and luminescent properties of Yb,Er:LaSc3(BO3)4 crystals

  • V. A. Lebedev*
  • , V. F. Pisarenko
  • , N. V. Selina
  • , A. A. Perfilin
  • , M. G. Brik
  • *Corresponding author for this work
  • Kuban State University

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Absorption and luminescence spectra and luminescence kinetics of Yb have been measured in crystals of Yb,Er:LaSc3(BO3)4 (LSB) for a wide region of variation of activator concentration. It has been established that an effective absorption cross-section of Yb3+ at the maximum of 982 nm is equal to 1.16×10-20 cm2. Effective absorption and emission cross-sections of Er3+at generation wavelength of 1555 nm are equal to σab = 4.4×10-21 and σem = 5.2×10-21 cm-2, respectively. 2F5/2Yb3+4I11/2Er3+ energy transfer for dominating luminescence centers in Yb,Er:LSB is described satisfactorily by a dipole-dipole interaction with CDA = 4.16×10-39 cm-6. Yb-Yb energy migration is very efficient and described by a hopping mechanism with CDD = 3.5×10-38 cm-6, the quantum efficiency in Yb0.15 (6.7×1020 cm-3), Er0.015 (6.7×1019 cm-3):LSB crystals has achieved 98%. Investigations of Yb,Er:LSB crystals have shown them to have necessary combination of properties to get an effective generation of 1.5 μm eye-safe radiation with laser diode pumping.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalOptical Materials
Volume14
Issue number2
DOIs
Publication statusPublished - May 2000
Externally publishedYes

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