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Proceedings Paper

Efficient and thermal-enhanced 480-nm upconversion emission in Tm3+/Yb3+-codoped silica-on-silicon channel waveguides pumped at 1064 nm
Author(s): Marcos V.D. Vermelho; Maria Tereza de Araujo; Evandro A. Gouveia; Artur S. Gouveia-Neto; J. Stewart Aitchison
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Paper 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.

Paper Details

Date Published: 15 May 2001
PDF: 6 pages
Proc. SPIE 4277, Integrated Optics Devices V, (15 May 2001); doi: 10.1117/12.426795
Show Author Affiliations
Marcos V.D. Vermelho, Univ. Federal de Alagoas (Brazil)
Maria Tereza de Araujo, Univ. Federal de Alagoas (Brazil)
Evandro A. Gouveia, Univ. Federal de Alagoas (Brazil)
Artur S. Gouveia-Neto, Univ. Federal de Alagoas (Brazil)
J. Stewart Aitchison, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 4277:
Integrated Optics Devices V
Giancarlo C. Righini; Seppo Honkanen, Editor(s)

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