Down-conversion from blue to near infrared in Tm3+-Yb 3+ codoped Y2O3 transparent ceramics

Hui Lin, Shengming Zhou, Xiaorui Hou, Wenjie Li, Yukun Li, Hao Teng, Tingting Jia

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Down-conversion from blue to near infrared (NIR) has been demonstrated in Tm3+-Yb3+ codoped Y2O3 transparent ceramics. Upon the 464-nm excitation, the energy transfer (ET) mechanisms consisted of the Tm3+ : 1G4→ 2Yb 3+ : 2F5/2 cooperative down-conversion and the phonon assisted Tm3+ : 1G4+Yb3+ : 2F7/2 → Tm3+ : 3H5 + Yb3+ : 2F5/2 cross relaxation. The low quantum yield of the latter process, together with the low absorption cross section of Tm3+ at 464 nm and the low quenching concentration of Yb3+ in the Y2O3 host, made the Yb3+ 1030-nm NIR emission too weak for practical application.

Original languageEnglish (US)
Article number5443576
Pages (from-to)866-868
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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