Crystal growth, thermal and laser properties of neodymium-doped strontium fluorapatite

Huaijin Zhang*, Xianlin Meng, Li Zhu, Changqing Wang, Pu Wang, Zhaohe Yang, Y. T. Chow, Judith Dawes

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this paper, the neodymium-doped strontium fluorapatite crystal has been grown by the Czochralski method. The data of thermal expansion and specific heat of the crystal have been measured. The thermal expansion coefficients along X and Z direction are α1 = 11.4×10-6/K and α3 = 12.3×10-6/K respectively. The specific heat is 110 cal/mol·K at 330K. The measured absorption spectra from 400 nm to 850 nm show that the crystal has absorption peaks around 805.5 nm, and the absorption coefficients at 805.5 nm are 16.05 cm-1 and 5.59 cm-1 for π and σ polarization respectively. The polarization fluorescence spectra at room temperature show that the strongest fluorescence is centered at 1058.8 nm. The lifetime of 4F3/2 is 175 μs for 1 at. % Nd3+ doped in the crystal. The laser at 1058.8 nm is demonstrated pumped by a 3W cw laser diode at 805.5 nm, and the slope efficiency is 31.7%.

Original languageEnglish
Pages (from-to)1510-1513
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number3 A
Publication statusPublished - 1999

Keywords

  • Czochralski method
  • Laser diode pumped lasers
  • Nd:Sr(PO)F
  • Specific heat
  • Spectroscopy
  • Thermal expansion

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