Steady-state characterization of up-conversion quenching in Er-doped glasses with the use of hypersensitive bands of ESA and GSA spectra

Nikolai V. Nikonorov; Alexander K. Przhevuskii; Alexander V. Chukharev

doi:10.1117/12.382857

13 April 2000 Steady-state characterization of up-conversion quenching in Er-doped glasses with the use of hypersensitive bands of ESA and GSA spectra

Nikolai V. Nikonorov, Alexander K. Przhevuskii, Alexander V. Chukharev

Author Affiliations +

Proceedings Volume 3942, Rare-Earth-Doped Materials and Devices IV; (2000) https://doi.org/10.1117/12.382857
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

A steady-state method was used for characterization of up- conversion quenching in Er-doped glasses. This method is based on measurement of pumping dependencies of quantum yield and the population of the ⁴I_13/2 metastable manifold. The population was determined from absorption spectra variation under the pump of semiconductor laser. The feature of the method consists in measurement of absorption spectra variation in short-wave spectral range of 300 - 520 nm. In this spectral region, a hypersensitive excited state absorption (ESA) band ((lambda) equals 478 nm) for ⁴I_13/2 yields ⁴G_9/2 transition was detected. The following parameters characterizing absolute intensity of ESA band were determined: line strength, integral cross- section, cross-section in maximum, and oscillator strength. This band was used for evaluation of the population of the ⁴I_13/2 metastable manifold and up-conversion coefficients. The up-conversion coefficient, C_up equals 1.7 X 10^-17 cm³s^-1, was obtained for an Er³⁺ concentration of 6.8 X 10²⁰ cm^-3.

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Nikolai V. Nikonorov, Alexander K. Przhevuskii, and Alexander V. Chukharev "Steady-state characterization of up-conversion quenching in Er-doped glasses with the use of hypersensitive bands of ESA and GSA spectra", Proc. SPIE 3942, Rare-Earth-Doped Materials and Devices IV, (13 April 2000); https://doi.org/10.1117/12.382857

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