Observation of bistable upconversion emission in Tm,Yb codoped yttria nanocrystal

L. Li; H. Li; X. L. Zhang; Y. F. Peng; M. Nie; B. Jiang; X. W. Zhang; R. M. Li

doi:10.1117/12.869817

4 November 2010 Observation of bistable upconversion emission in Tm,Yb codoped yttria nanocrystal

L. Li, H. Li, X. L. Zhang, Y. F. Peng, M. Nie, B. Jiang, X. W. Zhang, R. M. Li

Proceedings Volume 7846, Quantum and Nonlinear Optics; 78460Y (2010) https://doi.org/10.1117/12.869817
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Nonlinear upconversion emission properties in Tm and Yb codoped yttria nanocrystal have been studied under 973 nm laser excitation. Intrinsic bistability and hysteresis have been observed for the bright blue upconversion luminescence of Tm³⁺ ions at room temperature. The mechanism of the Tm³⁺ bistable emission is mainly related to laser-induced local thermal effects which cause the enhancement of sequential multi-photon energy transfer upconversion of Yb³⁺-Tm³⁺ pairs.

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L. Li, H. Li, X. L. Zhang, Y. F. Peng, M. Nie, B. Jiang, X. W. Zhang, and R. M. Li "Observation of bistable upconversion emission in Tm,Yb codoped yttria nanocrystal", Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460Y (4 November 2010); https://doi.org/10.1117/12.869817

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