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Journal of Synthetic Crystals ›› 2026, Vol. 55 ›› Issue (1): 46-51.DOI: 10.16553/j.cnki.issn1000-985x.2025.0175

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Growth and Spectral Properties of Yb∶YAP Crystal Fibers

WANG Chen1(), ZHANG Jiawei2, ZHANG Huali1, ZHOU Shenglang1, LIU Longxin2, JIANG Zhengyuan2, ZHANG Jun2, LIU Jian2, XU Xiaodong2(), XU Jun3   

  1. 1. Jiangsu GCL Silicon Material Technology Development Co. ,Ltd. ,Xuzhou 221000,China
    2. School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221116,China
    3. School of Physical Science and Engineering,Tongji University,Shanghai 200092,China
  • Received:2025-08-03 Online:2026-01-20 Published:2026-02-05
  • Contact: XU Xiaodong

Abstract: Yb3+-doped YAlO3 (Yb∶YAP) crystal fibers with different doping concentrations were successfully grown using the micro-pulling-down method. X-ray diffraction (XRD) characterization verified their orthorhombic crystal structure. Absorption spectra, fluorescence spectra and fluorescence decay curves were systematically measured at room temperature. For the 2.00% (atomic fraction) doped sample, the absorption cross-section at 978 nm reaches 1.14×10-20 cm2, while the maximum emission cross-section at 1 000 nm is 1.39×10-20 cm2, showing good spectral compatibility with commercially available laser diodes. The measured 2F5/2 level lifetime for 0.25%, 0.50%, 1.00%, 2.00% and 5.00%Yb∶YAP crystal fibers are 587, 604, 682, 705 and 698 μs, respectively. These results collectively indicate that Yb∶YAP crystal fibers are promising gain media for ultrafast laser applications.

Key words: micro-pulling-down method; crystal fiber; Yb∶YAP; crystal growth; spectral property

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