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Thermal and optical properties of erbium doped (GeS2)75(Ga2S3)25 glasses

D. T. TONCHEV1,* , K. V. KOUGHIA1, Z. G. IVANOVA2, S. O. KASAP1

Affiliation

  1. Department of Electrical Engineering, University of Saskatchewan, Saskatoon, S7N 5A9, Canada
  2. Institute of Solid State Physics, Bulgarian Academy of Sciences., 1784 Sofia, Bulgaria

Abstract

We have studied the thermal stability, in terms of the glass transition and crystallization, of (GeS2)75(Ga2S3)25 glasses doped with high amounts of Er2S3 (1.8 to 2.4 mol. %). These bulk glasses were synthesized from the sulphides of Ge, Ga and Er by conventional rapid quenching of the melts in ice-water. The Er3+ photoluminescence spectrum is a broad emission band at ~1540 nm. The PL lineshape does not show any dependence on the Er3+ content. The PL decay times are in the 1.13 – 1.55 ms range, and decrease with the rare earth content..

Keywords

Chalcogenide glasses, Thermal properties, Rare earth doping, Photoluminescence.

Submitted at: Nov. 1, 2006
Accepted at: Feb. 15, 2007

Citation

D. T. TONCHEV, K. V. KOUGHIA, Z. G. IVANOVA, S. O. KASAP, Thermal and optical properties of erbium doped (GeS2)75(Ga2S3)25 glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 2, pp. 337-340 (2007)