LD pumped quasi-three-level 928 nm laser with Nd:Gd0.69Y0.3TaO4 mixed crystal

Wenming Yao, Renpeng Yan, Wentao Wu, Kang Li, Xin Yu, Yuefei Ma, Fang Peng, Qingli Zhang, Renqin Dou, Nigel Copner, Jing Gao

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Abstract

We report on a 928 nm laser based on quasi-three-level transition of 4F3/24I9/2 in a Nd:Gd0.69Y0.3TaO4 mixed single crystal. With LD pumping at 808 nm, an output energy of 29.8 mJ at 928 nm is achieved with an optical-to-optical efficiency of 16.5% and a slope efficiency of 21.2%. In comparison, using 879 nm LD pumping, the maximum output energy at 928 nm reaches 48.5 mJ with an optical-to-optical efficiency of 33.4% and a slope efficiency of 38.0%.
Original languageEnglish
Article numberS0030399218309654
Pages (from-to)222-226
JournalOptics and Laser Technology
Volume111
Issue numberApril 2019
Early online date9 Oct 2018
DOIs
Publication statusPublished - Apr 2019

Keywords

  • LD pumped
  • Nd:GYTO
  • Direct pumping

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