Abstract
Upconversion luminescence (UCL) properties from Yb3+ doped and Tb3+/Yb3+ codoped high silica glasses excited by a 980 nm laser diode are investigated. The ln–ln plots of the UCL intensity versus laser power show abnormal relations: the slopes are larger than those reported in other papers. When tuning the laser power up and down successively, intrinsic optical bistability of Yb3+ ions is observed at room temperature in the visible and infrared range without external cavity. And this nonlinear effect induces the abnormal UCL phenomena.
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Zhang, Q., Chen, G., Xu, Y. et al. Abnormal upconversion luminescence from Yb3+ doped and Tb3+/Yb3+ codoped high silica glasses induced by intrinsic optical bistability. Appl. Phys. B 98, 261–265 (2010). https://doi.org/10.1007/s00340-009-3842-z
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DOI: https://doi.org/10.1007/s00340-009-3842-z