1.7 μm excited state absorption measurement in erbium-doped glasses
- 24 July 1995
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 67 (4) , 470-472
- https://doi.org/10.1063/1.114539
Abstract
We have measured the complete 1.7 μm excited state absorption (ESA) spectrum in erbium-doped glasses. The spectrum is obtained by measuring the gain of an erbium-doped waveguide in the 1400–1800 nm region. Using the measured spectra, we estimate the 1.5 μm uniform upconversion rate by calculating the spectral overlap between the 1.5 μm emission and 1.7 μm ESA cross sections. The technique is applied to erbium-doped, ion-exchangeable silicate glasses yielding upconversion constants in the range of 1–10×10−18 cm3/s.Keywords
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