Rate equation analyses and energy transfer of Er3+-doped sulfide glasses

Kohei Kadono; Jerome Porque; Bor-Chyuan Hwang; Shibin Jiang; Tetsuo Yazawa; Nasser Peyghambarian

doi:10.1117/12.382870

13 April 2000 Rate equation analyses and energy transfer of Er³⁺-doped sulfide glasses

Kohei Kadono, Jerome Porque, Bor-Chyuan Hwang, Shibin Jiang, Tetsuo Yazawa, Nasser Peyghambarian

Proceedings Volume 3942, Rare-Earth-Doped Materials and Devices IV; (2000) https://doi.org/10.1117/12.382870
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

Decay curves of 1.5 micrometers (⁴I_13/2) and 980 nm (⁴I_11/2) emissions from Er³⁺ ions in Ga₂S₃-GeS₂-La₂S₃ glasses were measured by the excitation of 1.5 micrometers laser diode pump. The decay curves were simulated using rate equations for a model consisting of four levels (⁴I_15/2, ⁴I_13/2, ⁴I_11/2, and ⁴I_9/2) of Er³⁺. A pair of unknown parameters, i.e., an excited state absorption coefficients for ⁴I_13/2 yields ⁴I_9/2, (sigma) _esa, and a cooperative upconversion coefficient for (⁴I_13/2, ⁴I_13/2) yields (⁴I_9/2, ⁴I_15/2), C, were included in the rate equations. They were estimated by fitting the simulated curves to the measured ones. The obtained values were 3 X 10^-21 cm² and 1 or 3 X 10^-21 cm³/s for the (sigma) _esa and C, respectively.

Citation Download Citation

Kohei Kadono, Jerome Porque, Bor-Chyuan Hwang, Shibin Jiang, Tetsuo Yazawa, and Nasser Peyghambarian "Rate equation analyses and energy transfer of Er³⁺-doped sulfide glasses", Proc. SPIE 3942, Rare-Earth-Doped Materials and Devices IV, (13 April 2000); https://doi.org/10.1117/12.382870

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