Efficient and thermal-enhanced 480-nm upconversion emission in Tm3+/Yb3+-codoped silica-on-silicon channel waveguides pumped at 1064 nm

Marcos V.D. Vermelho; Maria Tereza de Araujo; Evandro A. Gouveia; Artur S. Gouveia-Neto; J. Stewart Aitchison

doi:10.1117/12.426795

15 May 2001 Efficient and thermal-enhanced 480-nm upconversion emission in Tm³⁺/Yb³⁺-codoped silica-on-silicon channel waveguides pumped at 1064 nm

Marcos V.D. Vermelho, Maria Tereza de Araujo, Evandro A. Gouveia, Artur S. Gouveia-Neto, J. Stewart Aitchison

Author Affiliations +

Proceedings Volume 4277, Integrated Optics Devices V; (2001) https://doi.org/10.1117/12.426795
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Efficient and thermally enhanced frequency upconversion of cw IR radiation at 1.064 micrometers into blue, red and near-IR light in integrated Tm³⁺/Yb³⁺-codoped phosphosilicate silica-on-silicon buried waveguides is reported. Thermally induced frequency upconversion enhancement is observed for the first time in a Tm³⁺/Yb³⁺-codoped system excited off-resonance at 1.064 micrometers . A sevenfold thermally induced upconversion efficiency enhancement was obtained when the waveguide's temperature was varied in the 20 degrees C-120 degrees C range. The thermal effect is believed to be associated with a temperature dependent effective absorption cross-section for the Yb³⁺-sensitizer, which depends upon the phonon occupation number in the host matrix.

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Marcos V.D. Vermelho, Maria Tereza de Araujo, Evandro A. Gouveia, Artur S. Gouveia-Neto, and J. Stewart Aitchison "Efficient and thermal-enhanced 480-nm upconversion emission in Tm³⁺/Yb³⁺-codoped silica-on-silicon channel waveguides pumped at 1064 nm", Proc. SPIE 4277, Integrated Optics Devices V, (15 May 2001); https://doi.org/10.1117/12.426795

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