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OPTICAL PROPERTIES AND THERMAL STABILITY OF Er-DOPED As-Se (Te, S)-Ge-Ga GLASSES FOR PHOTONICS

D. Tonchev1,* , K. Koughia1, M. Munzar1, T. Sakai1,2, K. Maeda2, S. O. Kasap1

Affiliation

  1. Department of Electrical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK, S7N 5A9, Canada
  2. Department of Electronic Engineering, Miyazaki Univ. 1-1 Gakuen Kibanadai, Nishi, Miyazaki, 889-2192, Japan

Abstract

We have prepared a wide range of Er2S3-doped As-Se(Te,S)-Ga-Ge glasses of different compositions, by melt quenching techniques. We have studied the optical and thermal properties of these glasses by IR absorption, photoluminescence, PL, and temperature modulated differential scanning calorimetry (TMDSC) measurements. The observed compositional dependences indicate the possibility of varying the optical bandgap and still maintaining a good PL signal. It is possible to include Te in the glass structure in low amounts up to about 1 at. %. Beyond this composition, the more metallic Te reduces the glass stability..

Keywords

Chalcogenide glasses, NIR Optical spectra, Photoluminescence, Temperature-Modulated Differential Scanning Calorimetry (TMDSC).

Submitted at: Dec. 9, 2004
Accepted at: Jan. 26, 2005

Citation

D. Tonchev, K. Koughia, M. Munzar, T. Sakai, K. Maeda, S. O. Kasap, OPTICAL PROPERTIES AND THERMAL STABILITY OF Er-DOPED As-Se (Te, S)-Ge-Ga GLASSES FOR PHOTONICS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 1, pp. 333-336 (2005)