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Spectral properties and laser performance of Ho:CNGG crystals grown by the micro-pulling-down method

  • Yanyan Xue
  • , Na Li
  • , Qingsong Song
  • , Xiaodong Xu
  • , Xiaotao Yang
  • , Tongyu Dai
  • , Donghai Wang
  • , Qingguo Wang
  • , Dongzhen Li
  • , Zhanshan Wang
  • , Jun Xu*
  • *Corresponding author for this work
  • Tongji University
  • Jiangsu Normal University
  • Harbin Engineering University

Research output: Contribution to journalArticlepeer-review

Abstract

Ho3+-doped calcium niobium gallium garnet (Ho:CNGG) single crystals have been successfully grown by the micro-pulling-down (μ-PD) method. The crystal structure, spectral properties, and laser performance of Ho:CNGG crystals were investigated. The doped Ho3+ ions showed a broad absorption and fluorescence bands due to the random distribution of Nb5+, Ga3+ and cationic vacancies in the host lattices. Moreover, 1.0 at.% Ho:CNGG single crystal was end-pumped by using a diode-pumped Tm:YAP laser with central wavelength of 1937nm. The maximum output power of 1.4 W with a slope efficiency of 18.7% at 2080nm was obtained preliminarily.

Original languageEnglish
Pages (from-to)2490-2496
Number of pages7
JournalOptical Materials Express
Volume9
Issue number6
DOIs
StatePublished - 2019

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